Henry examined the table that represents values satisfying the function f(x) shown below.
Based on the information in the table, which one of these key features is incorrect?
A) the maximum value of the function is 4.
B) the y-intercept of the graph of the function is at (0,-18).
C) a local minimium is located within the interval [3,6].
D) a local maximum is located within the interval [ 1,3].