单项选择题

卧床、无发热或异常消耗的成年男性病人每天最低热卡需求是

A.15-20kcal/(kg.d)
B.25-30kcal/(kg.d)
C.30-50kca]/(kg.d)
D.50-60 kcal/(kg.d)
E.75 kcal/(kg.d)