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
A city has a population EXCEEDING: 
Select and explain. 
A. 100,000, B. 500,000, C. 10,00,000, D. 15,00,000
A: 100,000
Answer: A: 100,000 
Explanation: A city or a town is a relatively large, dense and permanent settlement of socially heterogeneous people. When the population exceeds 100,000, it is called a city. Ref: Park 21st edition, page: 630.