DESCRIPTION: Using C# write a class named RetailItem that holds data about an item in a retail store. The class should have the following fields: description. The description field references a String object that holds a brief description of the item. unitsOnHand. The unitsOnHand field is an int variable that holds the number of units currently in inventory. price. The price field is a double that holds the items retail price. Write a constructor that accepts arguments for each field, appropriate mutator methods that store values in these fields, and accessor methods that return the values in these fields. Once you have written the class, write a separate program that creates three RetailItem objects and stores the following data in them: Description Units on Hand Price Jacket 12 59.95 Designer Jeans 40 34.95 3 Shirt 20 24.95