Which of the following statements about authentication responses and conditions is true? （）(Choosetwo.)
- A When a router receives a failure response, it stops querying authentication methods.
- B When a router receives an error response, it stops querying authentication methods.
- C If the router receives a failure response from an authentication method, it queries the next method.
- D The router does not differentiate between failure and error responses; the authentication process is always interrupted.
- E If it receives no response from the authentication method, a router will determine the error condition On its own; the router also has the option to proceed to the next method in a list if configured accordingly.