Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
The following four graphs are profile plots obtained from a two-way analysis of variance where the response was compared between gender (male/female) and answer (yes/no) .
-Which of the four plots show a main effect for one factor but not for the other factor?

A) Plot A.
B) Plot A and Plot B.
C) Plot A and Plot D.
D) Plot B and plot D.