java question

Which pair of the exceptions are the most appropriate to be used in the catch blocks of the following program? public class HelloWorld { public static void main(String args[]) { Scanner in = new Scanner(System.in); try { int k = in.nextInt(); String s = "JAVAisnotfun"; System.out.println(s.charAt(k)); } catch ex) { } catch { ex) } finally { Select one: a.Input MismatchException and ClassCastException b.InputMismatchException and StringIndexOutOfBoundsException c. There is no risk of exception d.NullPointerException and StringIndexOutOfBoundsException e.ArithmeticException and ClassCastException