C# Tips

Today's C# Quiz

Quiz

The following C# methods express the same overloading methods except one. Which one is not considered as same overloading method?

public int A(int a, ref int b, ref int c);
public int A(int a, ref int k1, ref int k2);
public int A(int a, ref int b, out int c);
public int A(int a, out int b, out int c);
public int A(int a, int b, out int c);

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Answer