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The graph of $f'$ (not $f$ ) is given below.

graph of function

(Note that this is a graph of $f'$ , not a graph of $f$ .)

At which of the marked values of $x$ is
A. $f(x)$ greatest? $x =$
B. $f(x)$ least? $x =$
C. $f'(x)$ greatest? $x =$
D. $f'(x)$ least? $x =$
E. $f''(x)$ greatest? $x =$
F. $f''(x)$ least? $x =$

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