Implement in c sharp to create a grading program with following grading policies for a computer science class offered in ABC University a). There are two quizzes, each graded on the basis of 10 points. b). There is one midterm and one final, each graded on the basis of 100 points. c). The final counts for 40% of the grade, the midterm counts for 30%, and the two quizzes together count for a total of 30%. Define and use a structure for the student record including the grade of each quiz and the grade of each test. Also, define a class to calculate the students numeric score for the entire course and letter grade for the class.