单项选择题

利多卡因用于小儿硬膜外阻滞,以下哪组最为合理()

A.0.7%~1.5%,1~2mg/kg
B.1%~2%,4~5mg/kg
C.0.7%~1.5%,8~10mg/kg
D.1.5%~2%,5~7mg
E.2%,10mg/kg