Using the Following Summary of Results, How Many Levels Exist

Using the following summary of results, how many levels exist in factors A and B, respectively? (Assume a between-groups, fixed-factors model.) $\begin{array}{lcccc} \text { Source of } &\text { SS } & d f & \text { MS } & \text { F } \\ \text { Variation } && & & \\ \text { Factor A } &500 & 2 & \mathrm{H} & \mathrm{J} \\ \text { Factor B } &\text { C } & 3 & 200 & \mathrm{~K} \\ \text { AB Interaction } &\text { 900 } & \text { F } & 1 & \mathrm{~L} \\ \text { Within } &\text { D } & 60 & 50 & \\ \text { Total } &\text { E } & \text { G } & &\end{array}$

A) 2,3
B) 3,3
C) 3,4
D) 4,4