Simplify Assume All Variables Represent Positive Real Numbers $\frac { 64 \sqrt { 13 } } { 40 \sqrt { 5 } }$

Multiple Choice

Simplify. Assume all variables represent positive real numbers.
- $\frac { 64 \sqrt { 13 } } { 40 \sqrt { 5 } }$

A) $\frac { 8 \sqrt { 65 } } { 5 }$
B) $\frac { 8 \sqrt { 65 } } { 25 }$
C) $\frac { 8 \sqrt { 13 } } { 25 }$
D) $\frac { 8 \sqrt { 13 } } { 5 }$