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多选题
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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