Define and use a class for the student's record. The class should have instance variables for the quizzes, midterm, final, total score for the course and the final LETTER grade. The class should have input and output methods. The input method should not ask for the final numeric grade nor should it ask for the final letter grade. should have methods to compute the overall numeric grade and the final letter grade. The last two methods will be void methods that set the appropriate instance variables. Remember, one method can call another method.