​ a User Has to Provide a Valid Password to Gain

Multiple Choice

​ A user has to provide a valid password to gain access to a vault in a bank. In addition to this, the vault opens only when the user's fingerprint matches the fingerprint data stored in the database or when a valid smartcard is swiped. The authentication method used here is _____.

A) hard-drill authentication
B) zip-level authentication
C) two-factor authentication
D) private-key authentication