(Sorting Letters and Removing Duplicates) Write a console app that inserts 30 random letters into a List< char >. Perform the following queries on the List and display your results: [Hint: Strings can be indexed like arrays to access a character at a specific index.] a. Use LINQ to sort the List in ascending order. b. Use LINQ to sort the List in descending order. c. Display the List in ascending order with duplicates removed