Derive the equation of the parabola with a focus at (−7, 5) and a directrix of y = −11.

a. f(x) = one thirty second (x + 7)2 − 3

b. f(x) = −one thirty second (x + 7)2 − 3

c. f(x) = −one thirty second (x − 7)2 − 3

d. f(x) = one thirty second (x − 7)2 − 3