Given the uncompleted code of a class: class Person { String name, department; int age; public P

Given the uncompleted code of a class:

class Person {

String name, department;

int age;

public Person(String n) { name = n; }

public Person(String n, int a){ name = n; age = a; }

public Person(String n, String d, int a) {

// doing the same as two arguments version of constructor

// including assignment name=n,age=a

department = d;

}

}

Which expression can be added at the "doing the same as…" part of the constructor？

A．Person(n，a)； B．this(Person(n，a))；

C．this(n，a)； D．this(name，age)；