1. Find the statement that causes the compilation error. 2. Determine the output if that statement is removed. class A { public void test() { System.out.print("A"); } } class B extends A { public void test() { System.out.print("B"); } public class C extends A { public void test() { } System.out.print("C"); public static void main(String[] args) { A b1 = new A(); A b2 new c(); b1 = (A)b2; A b3 = (B)b2; b1.test(); } } b2.test();