单项选择题

A.每小时8~10ml/kg,1/2张600ml
B.每小时8~10ml/kg,1/3张600ml
C.每小时8~10ml/kg,2/3张450ml
D.每小时4~5ml/kg,1/2张450ml
E.每小时4~5ml/kg,1/3张450ml