4.	Average Grades
Define a class Student, which holds the following information about students: name, list of grades and average grade (calculated property, read-only). A single grade will be in range [2…6], e.g. 3.25 or 5.50.
Read a list of students and print the students that have average grade ≥ 5.00 ordered by name (ascending), then by average grade (descending). Print the student name and the calculated average grade.
Examples
Input	Output
3
Ivan 3
Todor 5 5 6
Diana 6 5.50	Diana -> 5.75
Todor -> 5.33
6
Petar 3 5 4 3 2 5 6 2 6
Mitko 6 6 5 6 5 6
Gosho 6 6 6 6 6 6
Ani 6 5 6 5 6 5 6 5
Iva 4 5 4 3 4 5 2 2 4
Ani 5.50 5.25 6.00	Ani -> 5.58
Ani -> 5.50
Gosho -> 6.00
Mitko -> 5.67
Hints
•	Create class Student with properties Name (string), Grades (double[]), and property AverageGrade (calculated by LINQ as Grades.Average(), read-only).
•	Make a list of students and filter with LINQ all students that has average grade >= 5.00.
•	Print the filtered students ordered by name in ascending order, then by average grade in descending order.