Chapter 4.5, Problem 1CYU

Match the expression with the correct result from the column on the right. Choices may be used more than once.

$\begin{array}{l}\begin{array}{l}\text{a}\text{. 6}{x}^{\text{8}}\hfill \\ \text{b}\text{. 8}{x}^{\text{6}}\hfill \\ \text{c}\text{. 6}{x}^{\text{6}}\hfill \\ \text{d}\text{. 8}{x}^{\text{8}}\hfill \end{array}\\ 1.\_\_\_\_\_3x^2\cdot 2x^4\end{array}$