For the Following Data,what Is the Value of SS_{within Treatment}

Multiple Choice

For the following data,what is the value of SS_{within treatment}?? $$\begin{array} { c | c | c } & \mathrm { n } = 5 & \mathrm { n } = 5 \\\text { A1 } & \mathrm { M } = 1 & \mathrm { M } = 2 \\& \mathrm { SS } = 10 & \mathrm { SS } = 20 \\& \mathrm { n } = 5 & \mathrm { n } = 5 \\\mathrm {~A} 2 & \mathrm { M } = 1 & \mathrm { M } = 4 \\& \mathrm { SS } = 10 & \mathrm { SS } = 20\end{array}$$

A) 10
B) 20
C) 40
D) 60