A Study by Dennis Regan Examined How the Factors of Liking

A study by Dennis Regan examined how the factors of liking for a requester and receiving a favor a free Coke) from a requester influenced the tendency to comply with the requester's subsequent appeal to purchase some raffle tickets. What happened?

A) Both liking and reciprocity were strong and equal motivators of compliance.
B) Reciprocity was the more powerful motivator because, when subjects owed the requester a favor, they bought as many tickets when they disliked him as when they liked him.
C) Liking was the more powerful motivator because the requester's prior favor hardly influenced subjects' decisions to buy the raffle tickets.
D) Both liking and reciprocity were ineffective motivators of compliance.