单项选择题

A.2%碳酸氢钠1-2ml,氯丙那林0.2-0.5ml
B.4%碳酸氢钠1-2ml,氯丙那林0.2-0.5ml
C.2%碳酸氢钠3-4ml,氯丙那林0.2-0.5ml
D.4%碳酸氢钠3-4ml,氯丙那林0.2-0.5ml