What is an equation in point-slope form for the line perpendicular to y = 2x + 13 that contains (8,-4)?

Select one:
O a. y + 4 = -1/2(x-8)

O b. x + 4 = 2(y - 8)

O c. y + 4 = 2(x - 8)

O d. y+ 8 = -1/2(x-4)