Which of the following statements about the course is true? i. Each student is allowed two drop quizzes. ii. Each student is allowed two missed discussion board posts. iii. If a student misses an exam, the points from the missed exam will be added to that student's final exam in lieu of a makeup exam. iv. If a student misses a quiz or discussion board post, it will count as one of the two student's drop quizzes/missed discussion board post, without penalty