Find an Equation of the Line, and Write It in (A)

Multiple Choice

Find an equation of the line, and write it in (a) slope-intercept form if possible and (b) standard form.
-Through $(-4,-6)$ and perpendicular to $y=\frac{1}{2} x+13$

A) (a) $y=2 x-14$
(b) $2 x-y=-14$
B) (a) $y=\frac{1}{2} x-4$
(b) $x-2 y=8$
C) (a) $y=-\frac{1}{2} x-8$
(b) $x+2 y=-16$
D) (a) $y=-2 x-14$
(b) $2 x+y=-14$