static void Main(string[] args) { var book = new Book("Scott's Grade Book"); book.AddGrade(89.1); book.AddGrade(90.5); book.AddGrade(77.5); book.ComputeStatistics(); var stats = book.GetStatistics(); Console.WriteLine($"The average grade is {stats.Average}"); Console.WriteLine($"The highest grade is {stats.High}"); Console.WriteLine($"The lowest grade is {stats.Low}"); }