Read the following conversation and answer the question.

W: Were you able to use the book that Dr. Nelson put on reserve for our homework?

M: No, I wasn't. It's a mystery to me why the library closed early.

Question: What does the man mean? 

- The library no longer had the book on reserve.

- The library closed earlier than he'd expected.

- The professor had chosen a mystery book for him instead.


The library closed earlier than he'd expected.