do it for DRRACKET

1. Write a Question structure, containing questions and their answers. Create a list of questions for an exam. 2. Assume that the student answers are given by a list of strings. Write a function to calculate how many questions are answered correctly. Modify your function to use abstract functions such as filter, map, foldr/foldl. 3. Write a function to grade each student with respect to their answers, using abstract functions. 4. Write a function to calculate the average grade of the above given exam