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
Not true about ergonomics 
Select and explain. 
A. Designing of machines, B. Improvement of efficiency of both man & machines, C. Related to PHC criterias, D. Adjusting the worker to his job
C: Related to PHC criterias
Answer: C: Related to PHC criterias 
Explanation: None