Multiply, and Then Simplify If Possible $( \sqrt { 35 } - \sqrt { 245 } ) ( \sqrt { 7 } + \sqrt { 5 } )$

Multiple Choice

Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
- $( \sqrt { 35 } - \sqrt { 245 } ) ( \sqrt { 7 } + \sqrt { 5 } )$

A) $7 \sqrt { 5 } + 5 \sqrt { 7 } - 7 \sqrt { 35 } - 35$
B) $7 \sqrt { 5 } - 5 \sqrt { 7 } + 7 \sqrt { 35 } + 35$
C) $7 \sqrt { 5 } + 5 \sqrt { 7 } - 7 \sqrt { 35 } + 35$
D) $7 \sqrt { 5 } + 5 \sqrt { 7 } + 7 \sqrt { 35 } + 35$