Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers thequestion.
- $\left(3 x^{4} y^{4}\right) \left(4 x^{6} y^{4}\right)$

A) $7 x^{10} y^{8}$
B) $12 x^{24} y ^{16}$
C) $12 x^{10} y^{8}$
D) $7 x^{24} y ^{16}$