下面代码执行后,正确的输出结果包括( ) public class FinalFinallyFinalize { final StringBuilder sb = new StringBuilder("init"); public static void main(String[] args) { FinalFinallyFinalize fff = new FinalFinallyFinalize(); System.out.println(fff.sb.toString()); fff.sb.append(" changed"); System.out.println(fff.sb.toString());}} A init B init changed C init init D changed changed