Use the function h(x) = 2x³ + 9x² to complete the problems below. The function h(x) has two critical numbers A and B, where A = B = h(x) A. Find these critical numbers.

a) A = 0, B = -9/2
b) A = -9/2, B = 0
c) A = -3, B = 0
d) A = 0, B = -3