1. public class Person {  2. private String name；  3. public Person（String name） { this.name = name； }  4. public boolean equals（Person p） {  5. return p.name.equals（this.name）；  6. }  7. }  Which is true？（） 

• A、 The equals method does NOT properly override the Object.equals method.
• B、 Compilation fails because the private attribute p.name cannot be accessed in line 5.
• C、 To work correctly with hash-based data structures， this class must also implement the hashCode method.
• D、 When adding Person objects to a java.util.Set collection， the equals method in line 4 will prevent duplicates.