(a) Declare a local string variable id and initialize it with your 8-digit student ID in string form. What is the output of the following program segment? String str = id + " "; // two spaces System.out.println(str.indexOf("5") + " + " + str.substring(0,2) + " " + str.trim().substring (5) + "%"); [2 marks] (b) The class List below is in java.util. What is the output of the following program segment? List aList = new Vector (); aList.add("one"); aList.add("two"); aList.add("three"); aList.add(2, "one"); aList.remove ("one"); System.out.println (aList + " " + aList.size()); [3 marks]