单项选择题

若i1=2i2,n1=n2/2,则当P相同时,( )。

A.(F/P,i<SUB>1</SUB>,n<SUB>1</SUB>)<<(F/P,i<SUB>2</SUB>,n<SUB>2</SUB>)
B.(F/P,i<SUB>1</SUB>,n<SUB>1</SUB>)=<(F/P,i<SUB>2</SUB>,n<SUB>2</SUB>)
C.(F/P,i<SUB>1</SUB>,n<SUB>1</SUB>)><(F/P,i<SUB>2</SUB>,n<SUB>2</SUB>)
D.不能确定(F/P,i<SUB>1</SUB>,n<SUB>1</SUB>)与(F/P,i<SUB>2</SUB>,n<SUB>2</SUB>)的大小