-The Common Size Percentage for Selling and Administration Costs in Mandrake

$\begin{array}{l}\text { Consider the following statement of earnings data for Mandrake Mills Inc. }\\\begin{array} { | l | r | r | } \hline & \mathbf { 2 0X7 } & \mathbf { 2 0 X 6 } \\\hline \text { Sales revenue } & \$ 97,300 & \$ 86,200 \\\hline \text { Less: Cost of goods sold } & \underline { 45,600 } & \underline { 53,400 } \\\hline \text { Gross profit } & 51,700 & 32,800 \\\hline \text { Selling and administration expense } & \underline { 22,500 } & \underline { 18,300 } \\\hline \text { Income before income tax } & \$ 29,200 & \$ 14,500 \\\hline\end{array}\end{array}$
-The common size percentage for selling and administration costs in 20X7 was

A) 43.5%
B) 21.2%
C) 23.1%
D) 33%