Given： 
Which statement is true？（）
- A、 The cardID and limit variables break polymorphism.
- B、 The code demonstrates polymorphism.
- C、 The ownerName variable breaks encapsulation.
- D、 The setCardInformation method breaks encapsulation.
- E、 The class is fully encapsulated.
正确答案:C
答案解析:有
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