Which of the following is the correct output for the program

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Which of the following is the correct output for the program given below?

#include <stdio.h>
int main ( )
{ 
    int a = 5;
    float b = 5.0;
    if (a == b)
         printf (" a and b are equal\n");
    else 
         printf ("a and b are not equal\n");
    return 0;
}

1. a and b are equal
2. a and b are not equal
3. Unpredictable
4. No output

Correct Option: A

During comparison a would get promoted to a float and then two floats would be compared.