the explanation is............
The word than preceding the underlined portion of the sentence tells us that the underlined portion is a comparison.Items compared must be parallel to each other,both as items and grammatically.Here,the money the Dancing Doll(DD) line received from sales is compared to that received by the Teeny Tiny Trucks)TT and Basic Blocks (BB)lines,so all three quantities should be started the same way.
Only the mane of the toy line and the amount should change from item to item,and the verb sold does not need to be repeated for each item.
(A)includes did with the TT sales but no verb with the BB sales,these forms are not parallel
(B)is not parallel because it uses did with TT sales and were with BB sales
(C)includes sold withTT sales,but no additional verb with BB,so it can also be eliminated
(D)uses Basic Blocks` sales,which is not parallel to Dancing Dolls line and Tenny Tine line
(E)eliminates the verbs and make the comparison more parallel by using more than for one item and nearly three times as much as for other.It`s the correct answer.Give kudos if you find my post helpful