Which of the following statements about MAC addresses are wrong ? (Multiple Choice)

Which of the following statements about MAC addresses are wrong ? (Multiple Choice)
A . Ethernet uses MAC address to identify the host
B . MAC address is a logical address that is easy to change
C . The MAC address is fixed in the ROM , usually cannot be changed
D . Usually only the terminal host needs the MAC address, routers and other network devices do not need

Answer: BD