class People{
String name;
public People() {System.out.print(1);}
public People(String name){
System.out.print(2);
this.name=name;
}
}
class Child extends People{
People father;
public Child(String flame){
System.out.print(3);
this.name=name;
father=new People(name+":F");
}
public Child() {System.out.print(4);}
}
A.312
B.32
C.432
D.132