单项选择题
A.You should assign the network 172.16.0.0/16.
B.You should assign the network 172.16.0.0/17.
C.You should assign the network 172.16.0.0/18.
D.You should assign the network 172.16.0.0/19.
E.You should assign the network 172.16.0.0/20.
F.You should assign the network 172.16.0.0/22.