Here, $\texttt{a}$ is a global variable.
Global variables are automatically initialized to $\texttt{0}$ if no value is given.
Also, $\texttt{b}$ is a static global variable.
Static variables are also automatically initialized to $\texttt{0}$ if no value is given.
So, $\texttt{a = 0}$ and $\texttt{b = 0}$.
Therefore, the output is $\texttt{0\ 0}$.
Answer: A