Find the Equation of the Tangent Line to the Curve $\mathbf{x}$

Multiple Choice

Find the equation of the tangent line to the curve when $\mathbf{x}$ has the given value.
- $f(x) =x^{2}+5 x ; x=4$

A) $y=-\frac{4 x}{25}+\frac{8}{5}$
B) $y=-39 x-80$
C) $y=13 x-16$
D) $y=\frac{x}{20}+\frac{1}{5}$