This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health care of community & international health, Subject name: Social & Preventive Medicine
[{'content': 'In primary health care, ABC and VED are related to : \nSelect and explain. \nA. National program evaluation at PHC level, B. Drug inventory management at PHC, C. Staff management at PHC, D. Vaccination coverage assessment in PHC area', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Inventory management : Science primarily about specifying the shape and placement of stocked goods It is required at different locations within a facility or within many locations of a supply network to precede the regular and planned course of production and stock materials Right stock at right quantity, in right place, at right time, and at right cost Minimise costs and minimise wastage Ref: Inventory Managment by Nose 1st edition Pgno : 36', 'role': 'assistant'}]