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: Physiology
[{'content': 'The following facilitates synaptic transmission of neurotransmitter \nSelect and explain. \nA. Hypocalcemia, B. Botulinum toxin, C. Acidosis, D. Hypoxia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hypocalcemia facilitates synaptic transmission.\nHypercalcemia, hypoxia, Botulinum toxin, tetanus toxin acidosis inhibits synaptic transmission.', 'role': 'assistant'}]