<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: Earliest fetal anomaly to be detected by USG: March 2013
Options:
A. Hydrocephalus
B. Achndroplasia
C. Anencephaly
D. Spina bifida
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is C: Anencephaly. Explanation: Ans. C i.e. Anencephaly<|im_end|>
