This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious disease, Subject name: Pediatrics
[{'content': 'Congenital hea lesion (s) in rubella are \nSelect and explain. \nA. VSD, B. ASD, C. Aoic stenosis, D. Coarctation of aoa', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cardiac abnormalities occur in half of the children infected during the 1st 8 wk of gestation. Patent ductus aeriosus is the most frequently repoed cardiac defect followed by lesions of the pulmonary aeries and valvular disease. Reference: Nelson textbook of pediatrics 19th edition Page 1077', 'role': 'assistant'}]