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: Psychiatry
[{'content': 'Which of the following increases on Electroconvulsive Therapy? \nSelect and explain. \nA. 5-hydroxy-indole-acetic acid, B. Dopamine, C. Serotonin, D. Brain derived neurotrophic factor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ECT causes an increase in Brain-derived neurotrophic\xa0factor (BDNF) and vascular endothelial growth factor (VEGF) in the hippocampus.', 'role': 'assistant'}]