Responding to growing demand for high-end vehicles, the interiors of the newest models are so luxurious that they sell for nearly twice the price of last year's models.

(A). the interiors of the newest models are so luxurious that they sell
(B). the interiors of the newest models are so luxurious that the cars are sold
(C). auto makers have installed interiors in the newest models that are so luxurious that they sell
(D). the interior of the newest models are so luxurious that they are sold
(E). auto makers have installed such luxurious interiors in the newest models that these cars sell

OA is B

I need an explanation to buttress the validity of option B, can an Expert help out pls