Find $a_{0}$ For the Function $h(x)=$ $\left\{\begin{array}{l}\pi \\0\end{array}\right.$ $\begin{aligned}-\pi &<\\0<\end{aligned}$ $\begin{array}{l}x \leq 0 \\x \leq \pi\end{array}$

Multiple Choice

Find $a_{0}$ for the function $h(x) =$$\left\{\begin{array}{l}\pi \\0\end{array}\right.$$\begin{aligned}-\pi &<\\0<\end{aligned}$$\begin{array}{l}x \leq 0 \\x \leq \pi\end{array}$ .

A) $-\frac{\pi}{4}$
B) $\frac{\pi}{4}$
C) $-\frac{\pi}{2}$
D) $\frac{\pi}{2}$
E) 0