public class OuterClass {   private double d1 1.0；   //insert code here   }   You need to insert an inner class declaration at line2. Which two inner class declarations are valid？（）

• A、 static class InnerOne {  public double methoda（） {return d1；}  }
• B、 static class InnerOne {  static double methoda（） {return d1；}  }
• C、 private class InnerOne {  public double methoda（） {return d1；}  }
• D、 protected class InnerOne {  static double methoda（） {return d1；}  }
• E、 public abstract class InnerOne {  public abstract double methoda（）；  }