Solve the Problem $$( n - 1 ) ( n - 1 ) ( n + 1 ) ( n + 1 )$$

Solve the problem.
- $$( n - 1 ) ( n - 1 ) ( n + 1 ) ( n + 1 )$$

A) $n ^ { 4 } - 2 n ^ { 2 } + 1$
B) $n ^ { 4 } + 2 n - 1$
C) $n ^ { 4 } - 2 n + 1$
D) $n ^ { 4 } + 2 n ^ { 2 } - 1$