A confederate stands near a participant at a bus stop and drops some papers. The dependent variable is whether the participant helps the confederate pick them up. In a factorial design, one independent variable is whether the confederate is male or female and the other is whether the confederate has a cane or not. Which of the following describes a potential interaction effect in this experiment? a. Participants help the confederate more when he or she has a cane
b. Participants help the confederate at a fairly high rate
c. Participants help the male confederate more when he has a cane but they help the female confederate at the same rate regardless of whether she has a cane
d. Many participants refuse to help