C# Your solution must include some kind of a product class with a name, category, description, and price for each item. 4 items minimum; stored in a list. Present a menu to the user and let them choose an item (by number or letter). Allow the user to choose a quantity for the item ordered. Give the user a line total (item price * quantity). Either through the menu or a separate question, allow them to re-display the menu and to complete the purchase. Give the subtotal, sales tax, and grand total. (Remember rounding issues the Math library will be handy!) Ask for payment typecash, credit, or check For cash, ask for amount tendered and provide change. For check, get the check number. For credit, get the credit card number, expiration, and CVV. At the end, display a receipt with all items ordered, subtotal, grand total, and appropriate payment info. Return to the original menu for a new order. (Hint: youll want an array or List to keep track of whats been ordered!) (Moderate) Store your list of products in a text file and then include an option to add to the product list, which then outputs to the product file.