Zeros and ones

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Given a recursive method:

public static String method(int n) {
    if (n == 0 || n == 1) {
        return String.valueOf(n);
    }
    return method(n / 2) + String.valueOf(n % 2);
}

Assume, n >= 0.

What does the resulting string contain after calling the method?

Select one option from the list

It contains a sequence of '0' and '1' with the length n / 2 where n is the input number.

It contains a sequence of '0' and '1' in which even digits of the input number is replaced by '0', odd digits is replaced by '1'.

It contains a sequence of '0' and '1' in which even digits of the input number is replaced by '1', odd digits is replaced by '0'.

It contains the inversed binary representation of the given number.

It contain a sequence of '1' with the same size as the input number.

It contains the binary representation of the given number.

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