Find the Range of the Given Function $$f ( x ) = \frac { 1 } { 2 } x ^ { 2 } - 8 x - \frac { 5 } { 2 }$$

Multiple Choice

Find the range of the given function.
- $$f ( x ) = \frac { 1 } { 2 } x ^ { 2 } - 8 x - \frac { 5 } { 2 }$$

A) $( - \infty , 0 ]$
B) $\left[ - \infty , - \frac { 53 } { 2 } \right]$
C) $\left[ \frac { 187 } { 2 } , \infty \right)$
D) $\left[ - \frac { 69 } { 2 } , \infty \right]$