2. In the following code, suppose that f is an instance of Foo. Answer Question 2. a. b. C. class Foo { d. } static int x; static int s; Which of the following statements is incorrect? f.smethod (); System.out.println (Foo.s); Foo.imethod (); System.out.println (Foo.x); void imethod () { } static void smethod() { }