C Programming Quizzes C Language Function

Directions:
What will be the output of the following program code?

Question:
main()
{
      static int var = 5;
      printf("%d ", var--);
      if(var)
            main();
}

Option A):
Infinite Loop
Option B):
5 4 3 2 1
Option C):
Compilation Error
Option D):
5 5 5 5 5

Correct Answer is Option B):
5 4 3 2 1