Rationalize the Numerator and Simplify $\frac { 7 - \sqrt { 6 } } { 7 + \sqrt { 6 } }$

Rationalize the numerator and simplify. Assume all variables represent positive real numbers.
- $\frac { 7 - \sqrt { 6 } } { 7 + \sqrt { 6 } }$

A) $\frac { 43 } { 55 - 14 \sqrt { 6 } }$
B) $\frac { 43 } { 55 + 14 \sqrt { 6 } }$
C) $\frac { 55 } { 43 - 14 \sqrt { 6 } }$
D) 1