The nurse is caring for a patient with wheezes, shortness of breath, urticaria and itching after receiving a new antibiotic. The nurse understands that the epinephrine in this situation would be administered intramuscularly (IM) rather than intravenously (IV) because:

A. IM epinephrine is absorbed quickly but not the fastest route; IV is faster but has higher risk. B. IV epinephrine is reserved for severe emergencies like cardiac arrest due to risk of serious side effects; IM administration is preferred for anaphylaxis because it is safer and effective. C. The concentration difference is not the primary reason for route selection. D. Epinephrine is the first-line treatment for anaphylaxis, so it should be administered.