A 29-year-old male complains of a severe headache and nausea that has gradually worsened over the past 12 hours. He is conscious, alert, and oriented and tells you that his physician diagnosed him with migraine headaches. He further tells you that he has taken numerous different medications, but none of them seem to help. His blood pressure is 132/74 mm Hg, his pulse is 110 beats/min and strong, and his respirations are 20 breaths/min and adequate. In addition to high-flow oxygen, further treatment should include:
A) Administering aspirin
B) Applying a cold pack to the head
C) Administering nitroglycerin
D) Administering an antiemetic