According to the Textbook, All of the Following People Are

According to the textbook, all of the following people are likely to resist persuasive attempts to adopt a preference for a different brand of soap EXCEPT

A) Shelly, who selectively attends to any persuasive attempts concerning a change in her brand of soap.
B) Jack, who does not have a vested interest in any particular brand of soap.
C) Kelly, who has previously made public commitments to her favorite brand of soap.
D) Sam, who is knowledgeable on the subject of soap.