Q. What is the difference between the following 2 C codes?

#include <stdio.h> //Program 1
    int main()
    {
        int d, a = 1, b = 2;
        d =  a++ + ++b;
        printf("%d %d %d", d, a, b);
    }

#include <stdio.h> //Program 2
    int main()
    {
        int d, a = 1, b = 2;
        d =  a++ +++b;
        printf("%d %d %d", d, a, b);
    }

• (A) No difference as space doesn’t make any difference, values of a, b, d are same in both the case
• (B) Space does make a difference, values of a, b, d are different
• (C) Program 1 has syntax error, program 2 is not
• (D) Program 2 has syntax error, program 1 is not