Find an Equation for the Tangent to the Curve at the Given

Multiple Choice

Find an equation for the tangent to the curve at the given point.
- $$f ( x ) = 8 \sqrt { x } - x + 5 , ( 64,5 )$$

A) $y = 5$
B) $y = - \frac { 1 } { 2 } x + 5$
C) $y = \frac { 1 } { 2 } x - 37$
D) $y = - \frac { 1 } { 2 } x + 37$