Analyze the following code:

// Enter an integer Scanner input = new Scanner(System.in);

int number = input.nextInt(); if (number <= 0) System.out.println(number);

options:

1) The if statement is wrong, because it does not have the else clause;

2) System.out.println(number); must be placed inside braces;

3) If number is zero, number is displayed;

4) If number is positive, number is displayed.

5) number entered from the input cannot be negative.