What two numbers have a sum of 217 and a difference of 85?

Which correctly factored form of the function  f(x) = 36x² + 15x - 6  can be used to identify the zeros?
A.)  f(x) = (4x - 1)(3x + 2)
B.)  f(x) = (12x - 2)(3x + 3)
C.)  f(x) = 3(4x - 1)(3x + 2)
D.)  f(x) = 3(12x - 2)(3x + 3)