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: Surgery
First investigation for solitary thyroid nodules is: (Or) Investigation of choice in discrete thyroid swelling is 
Select and explain. 
A. Thyroid scan, B. CT scan, C. MRI, D. FNAC
D: FNAC
Answer: D: FNAC 
Explanation: None