Sentence Correction

Hi,

This is an SC question encountered in the Kaplan-

The Dancing Doll line sold slightly more than $3.5 million worth of toys last year, 40 percent more than the Teeny Tiny Trucks line did and nearly three times as much as the Basic Blocks line's sales.

The choice I thought best among the ones given was -

the Teeny Tiny Trucks line sold and nearly three times as much as Basic Blocks' sales.

The reason I chose this was, that only in this answer is the Dancing Doll line's sales compared with the sales of the other two, rather than the other two.

But the correct answer is - the Teeny Tiny Trucks line and nearly three times more than the Basic Blocks line

Kaplan says this is because of parallelism - Dancing Doll line - Teeny Tiny Trucks line - Basic Blocks line

However, in this case isn't the sales of Dancing Doll being compared with the Teeny Tiny Trucks and Blocks line?

So, I dont understand if we choose parallelism here or actually comparing the sales with the sales?