Use the Graph Of $y = f ( x )$ To Identify at Which of the Indicated Points the Derivative

Multiple Choice

Use the graph of $y = f ( x )$ to identify at which of the indicated points the derivative $f ^ { \prime } ( x )$ changes from positive to negative.

A) (5,6)
B) (-1,2) , (2,4)
C) (-1,2) , (5,6)
D) (-1,2)
E) (2,4) , (5,6)