Which is an equation with a degree of 5, zeros located at (-2,0) and (5,0), and a y-intercept located at (0,-40)?

a. f(x) = (x+2)(x-5)(x+1)(x-3)(x-7)
b. f(x) = 5(x+2)(x-5)(x+1)(x-3)(x-7)
c. f(x) = (x+2)(x-5)(x+1)(x-3)(x-7) - 40
d. f(x) = 5(x+2)(x-5)(x+1)(x-3)(x-7) - 40