Write a class ssrow. objects of this class should keep track of string name, int score, int weight, string calc. ssrow also has a tostring method that returns this data in order, separated by commas. name + "," + score + "," + weight + "," + calc further design of the ssrow class is left to you. add what you need, but don't get carried away. write a class sswriter that has a main method. for each of the grading categories (lab, reading quizzes, group work, midterm, project, final, instructor discretion), query the user for a score, and create the following ssrow objects: "lab", , 20, "=b1*c1/100" "reading quizzes", , 10, "=b2*c2/100" "group work", , 10, "=b3*c3/100" "midterm", , 20, "=b4*c4/100" "project", , 15, "=b5*c5/100" "final", , 20, "=b6*c6/100" "instructor discretion", , 5, "=b7*c7/100" open a file for output with a file type of csv (say mygrades. csv, for example). write the tostring value for each ssrow to the file. finally, write a row "average",=(d1+d2+d3+d4+d5+d6+d7) open mygrades. csv with excel or libreoffice calc.