The librarian at a local school collected data on the number of students who were using the library after school each week during the 22 first weeks of school. The librarian counted the number of students in the library each day and then calculated the total for each week. For which week does the trend line underpredict the number of students using the library by the greatest amount? A. week 3. B. week 5 C week 10, or D. Week 22