This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical, surgical and gynaecological illness complicating pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Asymptomatic UTI in pregnancy, true is: \nSelect and explain. \nA. Most are usually asymptomatic in pregnancy, B. If untreated, progresses to pyelonephritis, C. Early and prompt treatment prevents abnormalities in fetus, D. Increase chance of premature infant', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Asymptomatic bacteriuria is used when a bacteria count of the same species over 10 5/mL in midstream clean catch specimen of urine on two occasions ia detected without symptoms of urinary infection. E.coli is the offending organism in over 90% cases. * 25% of these women are likely to develop pyelonephritis,usually in third TM if left untreated. * Increased association of premature labour and growth retarded babies is probably related with the underlying chronic renal lesion. * Incidence of HTN and anemia is stated to be high. Reference: Textbook of Dutta,9th edition, page 279', 'role': 'assistant'}]