Which two statements about the open and shared key wireless-authentication methods are true？（）

A. shared key authentication is considered more secure than open authentication
B. shared key authentication is considered less secure than open authentication
C. if the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data
D. if the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data
E. if the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data