So the question is asking if there are more than 12 desserts in a row?
1. Chocolate tart is 7 th from left and lemon tart is 5th from right
This alone is not sufficient as it can be arranged in multiple ways
Case 1: 1,2,3,L,5,6,C,8. —— here C chocolate tart is 7th from left and L lemon tart is 5th from right but total is <12
Case 2: 1,2,3,4,5,6,C,8,L,10,11,12,13 —- here C chocolate tart is 7th from left and L lemon tart is 5th from right but total is >12
So we have a conflict —-
insufficient 2. There is one dessert in between Chocolate and Lemon
This alone is not sufficient as we don’t know how many are on left or right of chocolate and lemon tart —
insufficientTogether, from 1 we get
Case 1: 1,2,3,L,5,6,C,8. —— here C chocolate tart is 7th from left and L lemon tart is 5th from right but total is <12
Case 2: 1,2,3,4,5,6,C,8,L,10,11,12,13 —- here C chocolate tart is 7th from left and L lemon tart is 5th from right but total is >12
And 2 says we can have only one in between C and L
So let’s rewrite case 1
1,2,3,4,L,6,C,8,9 — here they have one dessert in middle and C is 7th from left and L is 5th from right
But total is 9
Where as case 2: total is >12 so still not a fixed answer —-
insufficient Answer E