Find the Indicated Term of the Binomial Expansion $\left( \sqrt { 3 } x ^ { 3 } + y ^ { 5 } \right) ^ { 9 } ;$

Multiple Choice

Find the indicated term of the binomial expansion.
- $\left( \sqrt { 3 } x ^ { 3 } + y ^ { 5 } \right) ^ { 9 } ;$ fourth term

A) $13,608 x ^ { 12 } y ^ { 15 }$
B) $2,268 x ^ { 13 } y ^ { 14 }$
C) $2,268 x ^ { 12 } y ^ { 15 }$
D) $13,608 x ^ { 13 } y ^ { 14 }$