Crowds of angry , smelly people were bitching and bumping into each other , and into me , trying to get their copy of whatever textbook they needed for whatever stupid class they were taking . One lady asked to herself out loud " Where is 237 ? " when she was looking at the History section of books .

Generate a question about the above context.
Why may the people have been unhappy ?
Options:
[+] It was crowded , hot , and difficult to get their books .
[+] They needed to find the history books section to get books .
[+] They were trying to return textbooks they needed for their classes .
[+] None of the above choices .