一个数减去310,还剩160,这个数是请选择CBA;j2X3X4g+y.l0X4R'P1^,G(c
A.470.l0X4R'P1^,G(c
B.150.l0X4R'P1^,G(c
C.160.l0X4R'P1^,G(c