What is the result？（） 
- A、Compilation of class A fails.
- B、Line 28 prints the value 3 to System.out.
- C、Line 28 prints the value 1 to System.out.
- D、A runtime error occurs when line 25 executes.
- E、Compilation fails because of an error on line 28.
正确答案:A
答案解析:有
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