Add or Subtract $\sqrt { 3 } - 6 \sqrt { 75 } + 3 \sqrt { 27 }$

Multiple Choice

Add or subtract. Assume all variables represent positive real numbers.
- $\sqrt { 3 } - 6 \sqrt { 75 } + 3 \sqrt { 27 }$

A) $- 3 \sqrt { 105 }$
B) $- 3 \sqrt { 3 }$
C) $- 20 \sqrt { 105 }$
D) $- 20 \sqrt { 3 }$