Find the Absolute Extremum Within the Specified Domain $f(x)=\frac{5}{\sqrt{x^{2}+9}} ;[-3,2]$ A) $\left(2, \frac{5 \sqrt{13}}{13}\right)$

Multiple Choice

Find the absolute extremum within the specified domain.
-Minimum of $f(x) =\frac{5}{\sqrt{x^{2}+9}} ;[-3,2]$

A) $\left(2, \frac{5 \sqrt{13}}{13}\right)$
B) None
C) $\left(-3, \frac{5 \sqrt{2}}{6}\right)$
D) $\left(0, \frac{5}{3}\right)$