Question

Select the correct description of the changes in the function f(x) = 3x3 - 16x + 2.

a.It increases when -4/3 < x < 4/3, and it decreases when x < -4/3 and x > 4/3.

b.It increases when x < -4/3 and x > 4/3, and it decreases when -4/3 < x < 4/3.