Question 1  of   20

What is the output of the following program? class Program { enum Options { Unknown=-1 , A, B, C} static void Main() { var value = 3; Options a = Enum.IsDefined(typeof(Options), value) ? (Options)value : Options.Unknown; Console.WriteLine(a); Console.ReadKey(); } }

A. Unknown
B. A
C. C
D. B