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The output of the following code is:
int f(int a, int b); 
void main()
{
int a = 12, b=154;
printf("%d", f(a, b));
}
int f(int a, int b)
{
if (a<b) return(f(b, a));
if(b==0) return(a);
return (f(b, a % b));
}

A. 2

B. 1

C. Compilation error

D. Runtime error

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