Identifying the values a, b, and c is the first step in using the quadratic formula to find solution(s) to a quadratic equation.

What are the values a, b, and c in the following quadratic equation?

−3x2 − 5x + 9 = 0

a = 5, b = 9, c = 0
a = 3, b = 5, c = 9
a = −3, b = −5, c = 9
a = −5, b = 9, c = 0