Directions:

#include<stdio.h>
#define prod(a,b)  a*b
void main()
{
      int x=3,y=4;
      printf("%d", prod(x+2,y-1));
}

Question:
What will be the output of the following program?

Option A):
12
Option B):
10
Option C):
11
Option D):
15

Correct Answer is Option B):
10

Explanation:
The macro expands and evaluates to as:
x+2*y-1 => x+(2*y)-1 => 10