In the xy-coordinate plane, the graph of the equation y = 3x² - 12x - 36 has zeros at x = a and x = b, where a < b. The graph has a minimum at (c,-48). What are the values of a, b, and c?

A.) a = 2, b = 4, c = 2

B.) a = -2, b = 6, c = 2

C.) a = -3, b = 3, c = 0

D.) a = 3, b = 6, c = 2

A.) a = 2, b = 4, c = 2

B.) a = -2, b = 6, c = 2

C.) a = -3, b = 3, c = 0

D.) a = 3, b = 6, c = 2