Simplify:
(3m^4)^3.
A. 27m^12
B. 9m^12
C. 27m^7
D. 9m^7
To simplify (3m^4)^3, we need to raise the base 3 and the exponent 4 to the power of 3.
Raising a power to a power requires us to multiply the exponents.
So, (3m^4)^3 = 3^3 * (m^4)^3 = 27 * m^12.
Therefore, the simplified expression is 27m^12, which is option A.