What is the result？（） 
- A、Compilation succeeds.
- B、Compilation fails due to multiple errors.
- C、Compilation fails due to an error only on line 20.
- D、Compilation fails due to an error only on line 21.
- E、Compilation fails due to an error only on line 22.
- F、Compilation fails due to an error only on line 12.
正确答案:A
答案解析:有
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