This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical Illness Complicating Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following hepatitis virus have significant perinatal transmission \nSelect and explain. \nA. Hepatitis-E virus, B. Hepatitis-C virus, C. Hepatitis-B virus, D. Hepatitis-A virus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hepatitis -B Mother To Child Transmission (MTCT) is 90% when mother is HBsAg and HBeAg Positive Veical transmission is 10% in mother with negative HBe Ag', 'role': 'assistant'}]