A bookshelf has 4 sections. History books go in section 1 or 2. Science books go in section 3 or 4. Fiction books can go anywhere. There are 2 history, 2 science, and 2 fiction books. Each section gets at most 2 books. If section 1 has both history books, which must be true?
✓ Correct Answer: Option D
Section 1: 2 history (full). Science in 3 or 4 (2 books in 2 sections, possibly split). Fiction goes anywhere remaining. Section 2 is open for fiction or could be empty if fiction goes to 3 and/or 4.