Dear Teachers,<br/><br/> I have a question.<br/><br/> A: Is there a book on the desk?<br/><br/>(1) B: Yes, there is. There are two books on the desk.<br/><br/>(2) B: No, there isn't. There are two books on the desk.<br/><br/>Which answer is correct? <br/><br/>Thank you for your help!