Which of the following could she implement to add an additional factor of authorization?

Ann a network administrator has been tasked with strengthening the authentication of users logging into
systems in area containing sensitive information. Users log in with usernames and passwords, following
by a retinal scan. Which of the following could she implement to add an additional factor of
authorization?

A.
Requiring PII usage

B.
Fingerprint scanner

C.
Magnetic swipe cards

D.
Complex passphrases