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: Pediatrics
First trimester USG finding in Down syndrome? 
Select and explain. 
A. Nuchal thickening, B. Nuchal translucency, C. Cardiac anomalies, D. GI anomalies
B: Nuchal translucency
Answer: B: Nuchal translucency 
Explanation: Ans. is 'b' i.e., Nuchal translucency