i want to code a C# program that generates a Board Game according the input number (n) entered by the user. Creates (n x n) board game. The board should be filled in with random characters i would have defined in a list like (+, -, , @, #, ^). I want to be able to change position of these characters inside the board moving them using coordinates around them but can't move them diagonally. If three or more identical characters from the defined list of the same type are grouped together to form an L letter, then these characters will immediately disappear. The gaps that these leave behind will be filled by characters already existing on the board moving in one of the directions. This of course produces gaps in the board which will be filled with new randomly selected characters from the defined list. Include comments in your code for easy understanding. Please if you not sure please don't post your answer unless you test it yourself and it meets all these description.