Which Is the Best Definition of Confrontation Within a Helping

Which is the best definition of confrontation within a helping relationship?

A) The verbal attack of a client in an effort to get him or her to "open up"
B) The purposeful and manipulative effort on the part of the helper to get the client to tell the truth
C) The building of a trusting relationship followed by gentle prodding to get the client to change
D) Yelling at a client