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: Social & Preventive Medicine
Factor which is associated both with exposure and disease is called - 
Select and explain. 
A. Confounding factor, B. Risk factor, C. Proximal risk factor, D. Case
A: Confounding factor
Answer: A: Confounding factor 
Explanation: Ans. is 'a' i.e., Confounding factor