This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography, Subject name: Social & Preventive Medicine
All of the following are true regarding confounding factor EXCEPT: 
Select and explain. 
A. It is associated with exposure under investigation, B. It is distributed equally in study & control groups, C. It is associated both with exposure and disease, D. It is removed by matching in case control study
B: It is distributed equally in study & control groups
Answer: B: It is distributed equally in study & control groups 
Explanation: Ans. (b) It is distributed equally in study & control groupsRef: K. Park 23rd ed./72