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: Forensic Medicine
Mercury poison acts on: 
Select and explain. 
A. Proximal convoluted tubule, B. Distal convoluted tubule, C. Loop of Henle, D. Collecting ducts
A: Proximal convoluted tubule
Answer: A: Proximal convoluted tubule 
Explanation: A i.e. Proximal convoluted tubule