The Function $f(x)=2 x^{2}-x+6$ Satisfies the Hypotheses of the Mean Value Theorem on the Value

Multiple Choice

The function $f(x) =2 x^{2}-x+6$ satisfies the hypotheses of the Mean Value Theorem on the interval $[-9,-5]$ . Find all values of c that satisfy the conclusion of the theorem.

A) -8, -6
B) -8, -7
C) -7
D) -6