At a Political Rally, Murray Publicly Endorsed Amy for City

At a political rally, Murray publicly endorsed Amy for city council. During the next few weeks, whenever Murray is around his friends, they are always talking about supporting another candidate. Murray will probably not conform to his friends' opinion because:

A) of informational social influence.
B) of normative social influence.
C) of his prior commitment to endorsing Amy.
D) Murray was raised in the U.S., which is a collectivistic culture.