What values of a, b, and c would you use in the quadratic formula for the following equation?

5x +9x=4

A. a=-4, b = 9, c = 5
B. a= 5, 6 = 9, 0 = -4
C. a =5, b= -4, 0 = 9
D. a =5, b = 9, 0 = 4