What will be the output of the program? class SC2 { public static void main(String [] args) { SC2 s = new SC2(); s.start(); } void start() { int a = 3; int b = 4; System.out.print(" " + 7 + 2 + " "); System.out.print(a + b); System.out.print(" " + a + b + " "); System.out.print(foo() + a + b + " "); System.out.println(a + b + foo()); } String foo() { return "foo"; } }

• 9 7 7 foo 7 7foo
• 72 34 34 foo34 34foo
• 9 7 7 foo34 34foo
• 72 7 34 foo34 7foo