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: Medicine
[{'content': 'Fallots tetralogy manifestation is a) Left axis deviation    b) Left ventricular hypertrophy  c) Ventricular Septal Defect  d) Blalock taussig shunt is between pulmonary artery\n& subclavian artery  e) Morphine is contraindicated in cyanotic spells \nSelect and explain. \nA. abc, B. bd, C. cd, D. cde', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]