[单选题]

护士准备按医嘱给患者注射西地兰0.1mg,西地兰针剂的剂型是0.4mg/2ml。护士应该注射的毫升数是()

A.0.1ml

B.0.2ml

C.0.3ml

D.0.4ml

E.0.5ml

参考答案与解析: