The Nurse Answers a Patient's Call for a Pain Shot

The nurse answers a patient's call for a pain shot, only to find the patient laughing and joking with visitors. Which of the following responses by the nurse is appropriate?

A) "I'll bring your shot back later, after your visitors are gone."
B) "I can see your pain is better. Call again when you need your shot."
C) "You don't need this pain shot after all, do you?"
D) "Would you like your visitors to step out while I give you your pain shot?"