What Is the Benefit of Doing a Two-Way ANOVA Rather

Multiple Choice

What is the benefit of doing a two-way ANOVA rather than a one-way ANOVA on two factors separately?

A) We can detect interactions between the two factors.
B) By including a second factor,we may reduce the residual variance.
C) The two-way ANOVA is more efficient than a one-way ANOVA on two factors separately.
D) All of the above