What happens when you attempt to compile and run the following code?
#include
int mul (int a, int b=2)
{ int r; r=a*b; return (r);
}
int main ()
{
cout << mul(1) << mul(2,4); return 0; }
A. It prints: 2
B. It prints: 28
C. It prints: 8
D. It prints: 6
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