Determine output:

main()
{
      int i = abc(10);
      printf("%d", --i);
}

int abc(int i)
{
      return(i++);
}

A. Decision making B. Variable declaration C. Code organization and reusability D. Printing output

A. To declare a function's return type B. To declare a function's name C. To declare a function's parameters and return type D. To declare a function's name and parameters

A. 4 B. 8 C. 2 D. Error

A. By value B. By reference C. By pointer D. By address