Books can be borrowed from the library for 2 weeks at a time. Books are always out of the library for at least one week but are often returned after just one week rather than two. During each of the last 4 weeks the following numbers of books have been taken out. Week 1 – 40 Week 2 – 32 Week 3 – 43 Week 4 – 28
All of the books were returned on time, or early. Which one of the bar charts could not represent the number of books that were out of the library at the start of each week?