what is itdoing?

When a system officially permits access to a file or a program, what is itdoing?

A.
Validating

B.
Authorizing

C.
Authenticating

D.
Identifying

Explanation:
Authorizing and authenticating are very close in meaning but there is a distinct difference. Authentication is the process of verifying the identity of the subject requesting access. Authorization is the granting of permission.