下面是闰年的是请选择ABC1N/X2?.l7Z3o7D*_2Q(t0D2Z:C7S4l9n/V1T-q'g)J6z0v
A．19904l9n/V1T-q'g)J6z0v
B．21004l9n/V1T-q'g)J6z0v
C．20004l9n/V1T-q'g)J6z0v