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.
- $f(x) =x-\sqrt{x} ; x=1$

A) $y=\frac{x}{4}+1$
B) $y=-7 x-9$
C) $y=\frac{x}{2}-\frac{1}{2}$
D) $y=-7 x+28$