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多項選擇題

Which statements concerning the correlation between the inner and outer instances of non-static inner classes are true?()  

A.Member variables of the outer instance are always accessible to inner instances, regardless of their      accessibility modifiers.
B.Member variables of the outer instance can never be referred to using only the variable name within     the inner instance.
C.More than one inner instance can be associated with the same outer instance.
D.All variables from the outer instance that should be accessible in the inner instance must be declared     final.
E.A class that is declared final cannot have any inner classes.

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