Dutton and Aron Found It Necessary to Conduct a Third

Dutton and Aron found it necessary to conduct a third experiment, this time in a laboratory setting, mainly because of their inability to control for:

A) poor weather conditions, which caused the field experiment to be delayed several times.
B) the possibility that the female interviewer may have acted differently toward the two groups of subjects by exhibiting different forms of nonverbal behavior.
C) the amount of time that the interviewer spent with subjects in each condition.
D) the attractiveness of experimental subjects, who could not be screened for "good looks" in the field setting, as they could in a laboratory setting.