This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'A three year old child is brought to the emergency department having just ingested a large overdose of an antihistaminic drug. This drug is a weak base capable of entering most tissues including the brain. On physical examination the heart rate is 100/ minute, blood pressure is 110/60 mm Hg and the respiratory rate is 20/ minute. In this case of poisoning: \nSelect and explain. \nA. Urinary excretion would be accelerated by administration of NH4Cl, an acidifying\xa0 agent, B. Urinary excretion would be accelerated by administration of NaHCO3, an\xa0 alkalinizing agent, C. More of the drug would be ionized at blood pH than at stomach pH, D. Absorption of the drug would be faster from the stomach than from the small intestine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]