What kind of attack is being illustrated here?

Jack Hacker wants to break into Brown Co.’s computers and obtain their secret double fudge
cookie recipe. Jack calls Jane, an accountant at Brown Co., pretending to be an administrator
from Brown Co. Jack tells Jane that there has been a problem with some accounts and asks her to
verify her password with him ”just to double check our records.” Jane does not suspect anything
amiss, and parts with her password. Jack can now access Brown Co.’s computers with a valid
user name and password, to steal the cookie recipe. What kind of attack is being illustrated here?

A.
Reverse Psychology

B.
Reverse Engineering

C.
Social Engineering

D.
Spoofing Identity

E.
Faking Identity