Difficult# Interpreting Graph of First Derivative

APCALC-THKXX8

Given the graph of $f^{\prime}(x)$ below, determine which of the following statements are true.

I.$f$ is differentiable on $(-1,3)$.

II.$f(2)$ is an absolute maximum on $[1,3]$

III.$f$ is concave down on $(-1,3)$.