The Following Data Represent the Means for Each Treatment Condition

Multiple Choice

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data?
​ A1 A2
​
​
B1
​
M = 20
​
M = 40
​
B2
​
M = 20
​
M = 40

A) ​main effects for both factors and an interaction
B) ​main effects for both factors and no interaction
C) a main effect for factor A, no main effect for factor B, and no interaction
D) ​a main effect for factor A and an interaction but no main effect for factor B