What are the approximate solutions of 4x^2 + 3 = -12x to the nearest hundredth?

a.) x ≈ -3.23 and x ≈ 0.23
b.) x ≈ -2.72 and x ≈ -0.28
c.) x ≈ 0.28 and x ≈ 2.72
d.) x ≈ -0.23 and x ≈ 3.23