请问 NN 885的sec01-21

885的sec01-21

21.While the owner of a condominium apartment has free and clear title to the dwelling, owners of cooperative apartments have shares in a corporation that owns a building and leases apartments to them.
(A) While the owner of a condominium apartment has free and clear title to the dwelling,
(B) The owner of a condominium apartment has free and clear title to the dwelling, but
(C) Whereas owners of condominium apartments have free and clear title to their dwellings,
(D) An owner of a condominium apartment has free and clear title to the dwelling, whereas
(E) Condominium apartment owners have a title to their dwelling that is free and clear, while

想問如果用(C)那麼句子最後的them不會產生岐意嗎 會變成不知道是指代哪一個owners

就因為這個代名詞them就把owners都給先剔除啦 結果答案是C令人不解