Find the Domain and Range of the Function $$f ( x ) = x ^ { 2 } - 18 x + 87$$

Multiple Choice

Find the domain and range of the function.
- $$f ( x ) = x ^ { 2 } - 18 x + 87$$

A) Domain: $( - \infty , \infty )$ ; Range: $[ 6 , \infty )$
B) Domain: $( - \infty , \infty )$ ; Range: $[ 9 , \infty )$
C) Domain: $[ 6 , \infty )$ ; Range: $( - \infty , 9 ]$
D) Domain: $[ 6 , \infty )$ ; Range: $( - \infty , 0 ]$