In Which of the Following Situations Would a Verbal Order

In which of the following situations would a verbal order be acceptable?

A) A patient is requesting a laxative and the physician is only available by phone.
B) A patient has an extremely high blood glucose, but the physician is performing a sterile procedure on another patient.
C) A patient is requesting medication for pain; the physician is having coffee in the conference room.
D) While at a patient's bedside, the physician says to take a verbal order for an antihistamine.