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: Pediatrics
[{'content': 'A 18–month old baby presents with recurrent episodes of excessive crying followed by cyanosis, unconsciousness and occasional seizures since 9 months of age. The most likely diagnosis is – \nSelect and explain. \nA. Epilepsy, B. Anoxic spells, C. Breath holding spells, D. Vasovagal attack', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]