This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'Floor space of 2 persons - \nSelect and explain. \nA. 70-90 sq. Ft, B. 90-100 sq. Ft, C. 50-70 sq. Ft, D. 110-120 sq. Ft', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Floor space for two persons is 110 sq.ft. or above.This standard is adopted to avoid overcrowding. Overcrowding refers to situation in which more people are living in a single dwelling than there is space for, so that privacy secluded,movement is restricted, hygiene impossible,rest and sleep difficult.Infectious disease spread rapidly under conditions of overcrowding.The accepted standards are A)person per room: 1 room - 2 persons 2 room- 3 persons 3 room- 5 persons 4 room - 7 persons B) floor space 110 sq.ft- 2 persons 90-100 sq.ft.- 1 and half person(1 -10 years is half a unit) 70 - 90 sq.ft- 1 person Parks textbook of preventive and social medicine.K Park. Edition 23.page no: 752', 'role': 'assistant'}]