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单项选择题 public class SomeException {  } Class a：  public class a {  public void doSomething（） { }  } Class b：  public class b extends a {  public void doSomething（） throws SomeException { }  }  Which is true about the two classes？（） 

A、 Compilation of both classes will fail.

B、 Compilation of both classes will succeed.

C、 Compilation of class a will fail. Compilation of class b will succeed.

D、 Compilation of class a will fail. Compilation of class a will succeed.

  • D

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