Express the Following Expression in Simplest Radical Form $\frac { 4 } { 5 } \sqrt { 180 x y ^ { 3 } }$

Multiple Choice

Express the following expression in simplest radical form. All variables represent positive real numbers. $\frac { 4 } { 5 } \sqrt { 180 x y ^ { 3 } }$

A) $\frac { 24 x y \sqrt { 5 x y } } { 5 }$
B) $\frac { 24 \sqrt { 5 x y } } { 5 }$
C) $\frac { 24 y \sqrt { 5 x y } } { 5 }$
D) $\frac { 24 y \sqrt { 5 x } } { 5 }$