What will be the output of the following C code?#include

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What will be the output of the following C code?

#include <stdio.h>
    void main()
    {
        register int num = 10;
        if (num < 12)
        {
            num++;
            main();
        }
    }

1. main is called once
2. Segmentation fault
3. main is called thrice
4. main is called twice
5. None of these

Correct Option: B

Segmentation fault