单项选择题

以下哪个IP地址是广播地址。()

A.192.168.1.5/28(32位中前28位是网络号);255.255.255.240
B.192.168.1.10/28;255.255.255.240
C.192.168.1.31/28;255.255.255.240
D.192.168.1.40/28;255.255.255.240