Find the Largest Open Intervals Where the Function Is Concave $f(x)=\frac{3}{x+2}$

Multiple Choice

Find the largest open intervals where the function is concave upward.
- $f(x) =\frac{3}{x+2}$

A) $(-\infty,-2)$
B) None
C) $(-2, \infty)$
D) $(-\infty, \infty)$