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Moderate

Relative Extrema From Graph of Derivative

APCALC-E8ZHE5

Given the graph of the DERIVATIVE of the function $f(x)$ below, identify all of the $x$-values for which $f(x)$ has relative extrema.

A

$x=-10,\,-2$

B

$x=-10,-2,\ 8$

C

$x=-6,\,-1$

D

$x=-6,-1,\ 8$