一道GMAT的SC题The Western world’s love affair with chocolate is

一道GMAT的SC题
The Western world’s love affair with chocolate is well-documented:few people have been known to have tasted it for the first time without requesting more.
(A) few people have been known to have tasted it
(B) few having been known to taste it
(C) it has been tasted by few people
(D) few people have been known to taste it
(E) few people having tasted it
是D，但为什么呢？