Write a Linear Factorization of the Function $$f ( x ) = x ^ { 4 } - 18 x ^ { 3 } + 82 x ^ { 2 } - 18 x + 81$$

Multiple Choice

Write a linear factorization of the function.
- $$f ( x ) = x ^ { 4 } - 18 x ^ { 3 } + 82 x ^ { 2 } - 18 x + 81$$

A) $f ( x ) = ( x - 9 ) ^ { 2 } ( x + i ) ( x - i )$
B) $f ( x ) = ( x - 9 ) ( x - 8 ) ( x + i ) ( x - i )$
C) $f ( x ) = ( x - 9 ) ( x - 7 ) ( x + i ) ( x - i )$
D) $f ( x ) = ( x - 9 ) ( x + i ) ( x - i )$