下面哪一行命令可以将子网192.216.32.32/29中最后一个地址正确配置给路由器的serial端口?()
A.route r(config -if)# ip address 192.216.32.38 255.255.255.248
B.route r(config -if)# ip address 192.216.32.63 255.255.255.248
C.route r(config -if)# ip address 192.216.32.39 255.255.255.248
D.route r(config -if)# ip address 192.216.32.38 255.255.255.240