To simplify this expression, 6x^(4)*3x^(2) which would be the correct steps?

A. Multiply 6 x 3 for the numbers; then add 2 + 4 for the exponent on x.

B. You cannot simplify this expression because these are not like terms.

C. Add 6 + 3 for the numbers; then multiply 2 x 4 to get the exponent for x.

D. Multiply 6 x 3 for the numbers; then multiply 2 x 4 for the exponent on x.

The correct steps to simplify the expression 6x^(4)*3x^(2) would be:

D. Multiply 6 x 3 for the numbers; then multiply 2 x 4 for the exponent on x.

This would result in 18x^(6).