Simplify the Expression $$5 \sqrt [ 3 ] { 27 x } + 5 \sqrt [ 3 ] { 64 x }$$

Multiple Choice

Simplify the expression. Assume all variables represent positive real numbers.
- $$5 \sqrt [ 3 ] { 27 x } + 5 \sqrt [ 3 ] { 64 x }$$

A) $5 \sqrt [ 3 ] { 91 x }$
B) $7 \sqrt [ 3 ] { x }$
C) $35 \sqrt [ 3 ] { x }$
D) $35 x$