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: Gynaecology & Obstetrics
Earliest fetal anomaly to be detected by USG: March 2013 
Select and explain. 
A. Hydrocephalus, B. Achndroplasia, C. Anencephaly, D. Spina bifida
C: Anencephaly
Answer: C: Anencephaly 
Explanation: Ans. C i.e. Anencephaly