Perform the Indicated Operations and Simplify the Answer $$\sqrt { 7 } ( \sqrt { 63 } - \sqrt { 175 } )$$

Perform the indicated operations and simplify the answer.
$$\sqrt { 7 } ( \sqrt { 63 } - \sqrt { 175 } )$$

A) $- 112 \sqrt { 15 }$

B) $- 112$

C) $- 14 \sqrt { 15 }$

D) $- 14$