Which of the following verifies that the user enters a positive integer value? A. int num = 0, Scanner s = new Scanner(System.in): do { System.out print("Enter a positive integer: "): num = s.nextInt(): } while (num % 2 ! = 0): B. int num = 0, Scanner s = new Scanner(System.in): do { System out print("Enter a positive integer "): num = s.nextInt(): } while (num