多选题

知识点：Java 6/10（多选） Given the following...

Question

知识点：Java 6/10（多选）
Given the following code fragment, please select the correct description(s) of the generated output

public class C1{
    public C2 m1
    public C1(String s){
        m1 = new C2(s)
    }
}

public class C2{
    public String m2
    public C2(String s){
       m2 = s
    }
}

public class Test{
    public void doAction1(C1 c1){
        c1.m1.m2 = "changed"
    }
    public void doAction2(C1 c1){
        c1.m1 = new C2("changed")
    }
    public void doAction3(C1 c1){
        c1= new C1("changed")
    }
    public static void main(String[] args) throws Exception {
        C1 c = new C1("original")
        new Test().doAction1(c)
        System.out.println(c.m1.m2)
        c = new C1("original")
        new Test().doAction2(c)
        System.out.println(c.m1.m2)
        c = new C1("original")
        new Test().doAction3(c)
        System.out.println(c.m1.m2)
    }
}

A. &ldquooriginal&rdquo is printed in the first line.

B. &ldquochanged&rdquo is printed in the first line.

C. &ldquooriginal&rdquo is printed in the second line.

D. &ldquochanged&rdquo is printed in the second line.

E. &ldquochanged&rdquo is printed in the third line.