{现有类的定义如下:class Person{}class Student extends Person{}class Teacher extends Person{}class Box{}class Infor{Infor(T a){System.out.print(a);}}则下面语句错误的是( )}

A. Infor t =new Infor("hello");
B. Infor t1 = new Infor(new Teacher());
C. Infor t2 = new Infor