IP地址用十进制表示,每段最大数是255,下列IP地址与子网掩码,不正确的是。
A202.251.184.2 与 255.255.255.192
B202.252.184.2 与 255.255.255.0
C202.253.184.2 与 255.255.255.224
D202.257.184.2 与 255.255.255.0
A202.251.184.2 与 255.255.255.192
B202.252.184.2 与 255.255.255.0
C202.253.184.2 与 255.255.255.224
D202.257.184.2 与 255.255.255.0