18. Each of Hemingway's wives--Hadley Richardson. Pauline Pfeiffer. Martha Gelhom. and Mary Welsh --were strong and interesting women, very different from the often pallid women who populate his novels.
(A) Each of Hemingway's wives--Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--were strong and interesting women,
(B) Hadley Richardson, Pauline Pfeiffer, Martha Gelhorn, and Mary Welsh--each of them Hemingway's wives--were strong and, interesting women,
(C) Hemingway's wives--Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--were all strong and interesting women,
(D) Strong and interesting women—Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--each a wife of Hemingway, was
(E) Strong and interesting women—Hadley Richardson, Pauline Pfeiffer, Martha Gelhom, and Mary Welsh--every one of Hemingway's wives were
请问D选项中的主语(subject)为何是women,而不是each, each a wife难道做插入语的同位语?
为何E选项中的主语就是every one?而不是women? | 
