C# (Calculating Sales) A website sells three products whose retail prices are as follows: product 1, $2.98; product 2, $4.50; and product 3, $9.98. Write an app that reads a series of pairs of numbers as follows:

product number

quantity sold

Your app should use a switch statement to determine the retail price for each product. It should calculate and display the total retail value of all products sold. Use a sentinel-controlled loop to determine when the app should stop looping and display the final results.