// Course.java
package unit01.quiz;
public enum Course {
   ARTIFICIAL_INTELLIGENCE(536), COMPUTER_SCIENCE(521), BUSINESS_INFORMATICS(526);
   private int id;
   
   private Course(int id) { 
      this.id = id;
   }
}
// Main.java
package unit01.quiz;
public class Main {
    public static void main(String[] args) {
        Course course = Course.BUSINESS_INFORMATICS;
    }
}       
        
Which statements (in main()) will print "BUSINESS_INFORMATICS" to the terminal?
1) System.out.println(BUSINESS_INFORMATICS);
2) System.out.println(course);
3) System.out.println(Course.BUSINESS_INFORMATICS);
4) System.out.println(course.toString());
5) System.out.println(course.name());
6) System.out.println(course());
7) System.out.println(Course(3));
8) System.out.println(Course.values()[course.ordinal()]);