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abstract class BaseClass
{
       public virtual void MethodA()
       {
              Console.WriteLine("BaseClass");
       }
       public virtual void MethodB()
       {
       }
}
 
class Class1: BaseClass
{
       public void MethodA()
       {
              Console.WriteLine("Class1");
       }
       public override void MethodB()
       {
       }
}
 
class Class2: Class1
{
       new public void MethodB()
       {
       }
}
 
class MainClass
{
       public static void Main(string[] args)
       {
              Class2 o = new Class2();
              o.MethodA();
       }
}
A.      BaseClass
B.      BassClass Class1
C.      Class1
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