Sentence Correction

Published during the late eighteenth century, Diderot's factual Encyclopedia and his friend Voltaire's fictional Candide were the cause of such a sensational scandal, and both men prudently chose to embark on extended vacations in nearby Austria.

(A) Diderot's factual Encyclopedia and his friend Voltaire's fictional Candide were the cause of such a sensational scandal, and

(B) Diderot and his friend Voltaire's caused such a sensational scandal with their factual Encyclopedia and fictional Candide, respectively, that

(C) Diderot's factual Encyclopedia and his friend Voltaire's fictional Candide were the cause of a scandal so sensational that

(D) the scandal caused by Diderot's factual Encyclopedia and his friend Voltaire's fictional Candide was so sensational

(E) a factual Encyclopedia by Diderot and the fictional Candide, by his friend Voltaire, caused a sensational scandal, which


OA is C

What made Option C so correct? please, an Expert should come do justice here. Thanks