Simplify the Expression $$\left( \sin ^ { 2 } x + \cos ^ { 2 } x \right) - \left( \csc ^ { 2 } x - \cot ^ { 2 } x \right)$$

Multiple Choice

Simplify the expression.
- $$\left( \sin ^ { 2 } x + \cos ^ { 2 } x \right) - \left( \csc ^ { 2 } x - \cot ^ { 2 } x \right)$$

A) $\sin ^ { 2 } x$
B) $\cos ^ { 2 } x$
C) 0
D) 2