What will be printed?

class Teacher:
    def info(self):
        print("I am a teacher")

class PhysicsTeacher(Teacher):
    def info(self):
        print("I am a physics teacher")

class MathTeacher(Teacher):
    pass

class MusicTeacher(Teacher):
    def info(self):
        print("I am a music teacher")

teacher = Teacher()
physics_teacher = PhysicsTeacher()
math_teacher = MathTeacher()
music_teacher = MusicTeacher()

teacher.info()
physics_teacher.info()
math_teacher.info()
music_teacher.info()