地高辛有效血药浓度范围为
A.0.5~1.0μg/ml
B.0.9~2.0μg/ml
C.0.9~1.0μg/ml
D.0.9~2.5μg/ml
E.0.5~2.0μg/ml
请帮忙给出正确答案和分析,谢谢!