Simplify the Expression $( \sqrt { 12 } + \sqrt { 10 } ) ( \sqrt { 12 } - \sqrt { 10 } )$

Multiple Choice

Simplify the expression. Assume all variables represent positive real numbers.
- $( \sqrt { 12 } + \sqrt { 10 } ) ( \sqrt { 12 } - \sqrt { 10 } )$

A) 22
B) 2
C) $12 + 2 \sqrt { 120 }$
D) $12 - 4 \sqrt { 60 }$