能将程序补充完整的选项是( )。 class Person { private int a; public int change(int m){return m;) } public class Teacher extends Person { public int b; public static void main(String arg[]) { Person p=new Person(); Teacher t=new Teacher(); int i; } }
A.i=m
B.i=b
C.i=
P.a
D.i=
P.change(50)