Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class？（）

• A、 If the hashCode values are different， the objects might be equal.
• B、 If the hashCode values are the same， the object must be equal.
• C、 If the hashCode values are the same， the objects might be equal.
• D、 If the hashCode values are different， the objects must be unequal.