Which of the following statements about OSPF authentication are false? (Choose two.)
A. Entering a password in cipher text is allowed.
B. The ospf authentication-mode md5 1 huawei command and the ospf authentication-mode md5 1 plain huawei command have the same function.
C. If passwords are configured for both an area and an interface, the password configured for the area is used.
D. The ospf authentication-mode simple huawei command and the ospf authentication-mode simple plain Huawei command have the same function.