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
Putting profit ahead of health as a cause of disease is provided by theory of sociology 
Select and explain. 
A. Marxist theory, B. Feminist theory, C. Parsonian theory, D. Foucauldian theory
A: Marxist theory
Answer: A: Marxist theory 
Explanation: None