An Experiment Was Designed to Determine If Gender of the Interviewer

An experiment was designed to determine if gender of the interviewer and the amount of eye contact by the interviewer will influence the participant’s liking of an interviewer. Thus participants were randomly assigned to groups that had either a male or female interviewer who made little, moderate, or sustained eye contact. At the end of the sessions, the participants were asked to rate their liking of the interviewer.
-This experimental design allows for testing

A) the effect of interviewer gender on liking.
B) the effect of interviewer gender on liking and the effect of eye contact on liking.
C) the effect of eye contact on liking and the interaction effects of interviewer gender and eye contact on liking.
D) the effect of interviewer gender on liking, the effect of eye contact on liking, and the interaction effects of interviewer gender and eye contact on liking.