The following statement about the IP address is correct ______ . (Multiple choices)

The following statement about the IP address is correct ______ . (Multiple choices)
A . The first byte of class A address is 0 ~ 126 ( 127 is reserved for other uses)
B . An IP address with a binary zero in the host number part is called a network address and is used to identify all hosts on a network.
C . IP addresses are usually expressed in dotted decimal format, for example: 10.110.168.121
D . The IP address consists of two parts: the network number and the host number

Answer: BCD