单项选择题

A.MCV增高,MCH增高,MCHC减低
B.MCV增高,MCH增高,MCHC正常
C.MCV减低,MCH减低,MCHC正常
D.MCV减低,MCH减低,MCHC减低
E.MCV减低,MCH减低,MCHC增高