单项选择题
A.(F/P,i1,n1)<(F/P,i2,n2) B.(F/P,i1,n1)=(F/P,i2,n2) C.(F/P,i1,n1)>(F/P,i2,n2) D.不能确定(F/P,i1,n1)与(F/P,i2,n2)的划