1) WABC123FM radio station is seeking your expertise in designing their new RadioSongSpin1.0 software. This software is used to automate their broadcast programming by playing pre-programmed playlists. Each song in the library belongs to a singer or a band. A band or singer can of course have many different songs in the system. The system can also track all songs that belong to an album, ep or singles. Songs can all be arranged in a playlist and broadcasted through the airwave and the internet. There are 3 different types of playlists; WorkHour Playlist, Evening Playlist and AfterHour Playlist. Besides songs, PSA announcement and radio commercial can also be loaded into a playlist. Lastly, the station wants to track on the DJ that assembled and curated each playlist. Complete a class diagram for the system above.

2) Create ONE DLL which contain 2x classes (CalculateIDTax class and CalculateMTTax class). Each class should have a Calculate() method that calculates each state's sales tax; ID sales tax (7.4%) and MT sales tax (6.9%). One of the classes must inherit from the another (parent) and OVERRIDE its Calculate() method. On Main() , your application must ask the user for the total sales price to be input for both ID and MT Calculate's methods.