14. 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 LACE>AustriaLACE>.

(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（C）

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

请问c选项中，his不是不能指代Diderot吗？因为Diderot用了所有格呀！为什么正确答案选的是c?

这个问题由来已久了，还没定论，OG里有些题也是这样指代的。