Simplify the Expression by Using the Distributive Property $8 \sqrt { 13 } + 4 \sqrt { 13 }$

Multiple Choice

Simplify the expression by using the distributive property. $8 \sqrt { 13 } + 4 \sqrt { 13 }$

A) $47$
B) $32 \sqrt { 13 }$
C) $12 \sqrt { 13 }$
D) $4 \sqrt { 13 }$
E) $11 \sqrt { 13 }$