请看下面的程序段
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 if constructer
}
下面那个选项可以添加到// doing the same……处（    ）
A．Person(n,a)         B．this(Person(n,a))
C．this(n,a)             D．this(name.age)

请看下面的程序段
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 if constructer
}
下面那个选项可以添加到// doing the same……处（    ）
A．Person(n,a)         B．this(Person(n,a))
C．this(n,a)             D．this(name.age)