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Language/Type: C# if/else parameters return

Write a method named CountUnique that takes three integers as parameters and that returns the number of unique integers among the three. For example, the call CountUnique(18, 3, 4) should return 3 because the parameters have 3 different values. By contrast, the call CountUnique(6, 7, 6) should return 2 because there are only 2 unique numbers among the three parameters: 6 and 7.

Method: Write a C# method as described, not a complete program or class.

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