Design and implement a C# program, using the concept of arrays, that simulates Magic 8-Ball. The Magic 8-Ball is a plastic sphere made to look like an eight-ball, that is used for fortune-telling or seeking advice. The program should allow a user to enter a question from the keyboard. The program should respond to the question by selecting one of 20 pre-programmed responses. The user should be allowed to ask questions repeatedly in one program run.