This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Which of the following defines Pentalogy of Fallot? \nSelect and explain. \nA. TOF with PDA, B. TOF with ASD, C. TOF with COA, D. TOF with Polysplenia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pentalogy of Fallot is a rare form of cyanotic congenital hea disease, characterized by an association of atrial septal defect (ASD) with tetralogy of Fallot (TOF) . Ref - Harrison 20th edition pg 1834-36 , pubmed.com', 'role': 'assistant'}]