Compare the quantities in Column *A* and Column *B*, and answer as follows:

(A) if the quantity in Column *A* is greater

(B) if the quantity in Column *B* is greater

(C) if the two quantities are equal

(D) if the relationship cannot be determined from the information given

**x > 0**

\[\begin{array}{c|c}
\text{Column A} & \text{Column B} \\
\hline
\frac{1}{5}(x)^2 & 20\% \;of\; \sqrt{x^4} \\
\end{array}\]