Use the Properties of Logarithms to Rewrite the Expression $\log _ { a } \left( 4 x ^ { 3 } y \right)$

Use the properties of logarithms to rewrite the expression. Simplify the result if possible. Assume all variables represent positive real numbers.
- $\log _ { a } \left( 4 x ^ { 3 } y \right)$

A) $\log _ { a } \left( 4 + x ^ { 3 } + y \right)$
B) $\log _ { a } 4 + \left( \log _ { a } x \right) ^ { 3 } + \log _ { a } y$
C) $\left( \log _ { a } 4 \right) \left( \log _ { a } x \right) \left( \log _ { a } y \right)$
D) $\log _ { a } 4 + 3 \log _ { a } x + \log _ { a } y$