再生障碍性贫血的Bessman分类特点是（）.

A.MCV正常，RDW正常

B.MCV增加，RDW正常

C.MCV减低，RDW正常

D.MCV增加，RDW增加

E.MCV减低，RDW增加

—"Is this a photo of your family?''

—"______." [ ]

A. Yes, this is

B. Yes, it is

C. No, this isn't

D. Yes, they are