【多选题】
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.
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