This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Anencephaly can be diagnosed by USG at 
Select and explain. 
A. 10-12 weeks of gestation, B. 14-18 weeks of gestation, C. 20-24 weeks of gestation, D. 24-28 weeks of gestation
A: 10-12 weeks of gestation
Answer: A: 10-12 weeks of gestation 
Explanation: A i.e. 10-12 weeks of gestation Earliest detectable congenital anomaly on USG is Anencephaly.Q Anencephaly can be diagnosed - Earliest at 10 weeksQ Best at 12 weeksQ (100% accuracy)