An immobile patient who has been alert, coherent, and oriented to time, place, and person says, "I keep hearing a cat crying, but I know there can't be a cat in here, can there?" Which of the following would be an appropriate response?
1) "No, there can't be a cat in here. It's just your imagination."
2) "Yes, there might be a cat in here. Let me check."
3) "I'm not sure. Would you like me to look for a cat?"
4) "I don't know. Maybe there is a cat in here."