Retail stores of the same type often succeed despite the fact that they are clustered next to each other; one reason is suggested by the behavior of consumers, who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores.

A. Retail stores of the same type often succeed despite the fact that they are clustered next to each other; one reason is suggested by the behavior of consumers, who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores.
B. If clustered next to each other, one reason that retail stores of the same type succeed is suggested by the behavior of consumers, who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores.
C. If clustered next to each other, one reason that retail stores of the same type succeed is suggested by consumers who would rather shop in an area in which comparisons between products can be made at several stores than those who would rather shop in an area in which comparisons can be made at only one or two stores.
D. The fact that there are consumers who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores is suggestive of one reason, if clustered next to each other, retail stores can succeed.
E. The fact that there are consumers who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores suggests one reason retail stores can succeed despite being clustered next to each other.

Retail stores of the same type often succeed despite the fact that they are clustered next to each other;one reason is suggested by the behavoius of consumers, who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores.
(A)Retail stores of the same type often succeed despite the fact that they are clustered next to each other;one reason is suggested by the behavoius of consumers, who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores
(B)If clustered next to each other, one reason that retail stores of the same type succeed is suggested by the behavior of consumers, who would rather shop in an rea in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores
(C)If clustered next to each other, one reason that retail stores of the same type succeed is suggested by the consumers who would rather shop in an area in which comparisons between products can be made at several stores than those who would rather shop in an area in which comparisons can be made at only one or two stores
(D)In fact that there are consumers who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores is suggestive of one reason, if clustered next to each other, retail stores can succeed.
(E)In fact that there are consumers who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores suggests one reason retail stores can succeed despite being clustered next to each other

Can anyone please explain, why the answer for the question above, 'between' is not followed with 'and'
and also could you please help me distinguish when to use idiom between x and y and when not to use it

while A is better amongst the rest. A states that 'one reason is suggested by the behavior of consumers'

it reads as if behaviour is suggesting one reason.

how is that correct? am I missing a certain usage of 'suggest'?

What exactly wrong in option C and E ?

C. If clustered next to each other, one reason that retail stores of the same type succeed is suggested by consumers who would rather shop in an area in which comparisons between products can be made at several stores than those who would rather shop in an area in which comparisons can be made at only one or two stores.

E. The fact that there are consumers who would rather shop in an area in which comparisons between products can be made at several stores than in an area in which comparisons can be made at only one or two stores suggests one reason retail stores can succeed despite being clustered next to each other.