Add or Subtract $$6 \sqrt [ 3 ] { 2 } - 4 \sqrt [ 3 ] { 128 }$$

Multiple Choice

Add or subtract. Assume all variables represent positive real numbers.
- $$6 \sqrt [ 3 ] { 2 } - 4 \sqrt [ 3 ] { 128 }$$

A) $6 \sqrt [ 3 ] { 2 } - 4 \sqrt [ 3 ] { 128 }$
B) $2 \sqrt [ 3 ] { 2 }$
C) $10 \sqrt [ 3 ] { 2 }$
D) $- 10 \sqrt [ 3 ] { 2 }$