What happens when you attempt to compile and run the following code?

What happens when you attempt to compile and run the following code?
#include using namespace std;
int fun(int x);
int main() { cout << fun(0); return 0; } int fun(int x) { if(x > 0) return fun(x-1); else return 100; }
A. It prints: 0
B. It prints: 10
C. It prints: 100
D. It prints: -1

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