// Person.java
package unit01.quiz;
public abstract class Person {
    public abstract String talk();
}
// Student.java
package unit01.quiz;
public class Student extends Person{
    private final String name;
    public Student(String name){
        this.name = name;
    }
    
    // Student tells own name
    public String talk(){
        return name;
    }
}  
// Teacher.java
package unit01.quiz;
public class Teacher extends Person{
    private final String subject;
    public Teacher(String subject){
        this.subject = subject;
    }
    // Teacher tells about subject
    public String talk(){
        return subject;
    }
}
// Main.java
package unit01.quiz;
public class Main {
    public static void main(String[] args) {
        Student student = new Student("Paul");
        Teacher teacher = new Teacher("Maths");
    }
}
       
Which of the following statements in main() are correct (Syntax correct)?
1) System.out.println("Student " + student.name + " is being taught " + teacher.subject);
2) System.out.println("Student " + Student.name + " is being taught " + Teacher.subject);
3) System.out.println("Student " + Student.talk() + " is being taught " + Teacher.talk());
4) System.out.println("Student " + student.talk() + " is being taught " + teacher.talk());