测一个约6牛的力时,应选用的弹簧秤的量程及最小刻度最恰当的是( )
A:10牛,0.2牛
B:5牛,0.1牛
C:15牛,0.5牛
D:以上三个都可以
— Helen, do you know if Martin to my party next week?
—I think he will come if he free.