单选题
Which statement is true？（） 
发布日期：2021-05-17
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.
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