GMAT Sentence Correction (SC) | Re: It is the relationship of Hemingway with his mother, Grace,

It is the relationship of Hemingway with his mother, Grace,which is probably the most enigmatic of all the women in his life.

(A) which is probably the most enigmatic of all the women in his life
(B) who is probably the most enigmatic of all the women in his life
(C) which is probably the most enigmatic of all his relationships with women
(D) who, of all the relationships eh had with women, is probably the most enigmatic
(E) which, of all the women in his life, is probably the most enigmatic