In a PAM configuration file, which of the following is true about the sufficient control flag in
the following line? Auth sufficient pam_module.so

A.
This module is sufficient to determine both success or failure of an authentication attempt
and no other modules will need to be tried.

B.
Failure of this module will not be considered fatal and, if the module succeeds, success
will be returned to the application immediately without considering and further modules.

C.
If a previous required module fails, success of this module will be used to check if further
modules in the stack should be tried.

D.
This PAM module is called if it is present, otherwise, further modules will be tried.

Explanation: