One Study Had Individuals Participate in an "Art Appreciation Study

Multiple Choice

One study had individuals participate in an "art appreciation study." In one condition of the real study on reciprocity, one participant (actually a confederate to the experiment) offered the other participant a Coke. After the experiment, the confederate asked the real participant to buy a raffle ticket. What was the outcome of this study?

A) Participants across the Coke/no Coke conditions were equally likely to buy raffle tickets.
B) Only participants in the no Coke condition bought raffle tickets.
C) Neither participants in the Coke or no Coke conditions bought raffle tickets.
D) Participants in the Coke condition bought, on average, twice as many raffle tickets as participants in the no Coke condition.