In a C# create 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 application that reads a series of pairs of numbers as follows: a) product number b) quantity sold Your application 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 application should stop looping display the final results.