This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Risk of the damage to fetus by material rubella is maximum if mother gets infected in - \nSelect and explain. \nA. 6-12 weeks of pregnancy, B. 6-12 weeks of pregnancy, C. 6-12 weeks of pregnancy, D. 6-12 weeks of pregnancy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: If rubella occurs in very early pregnancy the fetus may die. Congenital malformation are commonest during the first trimester (1st 12 wk) REF:ANANTHANARYANAN TTEXTBOOKOF MICROBIOLOGY 9EDITION PGNO.555', 'role': 'assistant'}]