An academy wishes to manage the courses taught in several colleges For this, we have the following information:Every college has a websiteEach college is structured into departments, which group each of the specific teachers Among theseteachers, one of them is responsible for the departmentA teacher is characterized by his surname, first name, telephone, email, date of taking office andhis indexEach teacher teaches only one subject.$-$Students follow a number of subjects and receive a grade for each subjectcollege $-$For each student, we want to manage his name, first name, phone, email, and his year of entry to$-$A subject can be taught by several teachers but always takes place in the same classroom subjects inWe also want to calculate the overall average of a student and be able to display the which he$/$she has not been graded$-$Lastly, we must be able to print the data sheetQuestions:$1.$ Draw the class diagram for this system $(10$ points$)$