Correct option is A
As per the Census of India, a town is classified under either statutory or census towns. A census town must satisfy all three conditions:
Population of at least 5,000,
Population density of at least 400 persons per sq. km,
At least 75% of the male working population engaged in non-agricultural (secondary and tertiary) activities.
• The Census of India 2011 classified 7,935 towns, including 4,041 statutory towns and 3,894 census towns.
• The Registrar General and Census Commissioner of India is the authority responsible for census classification.
• Non-agricultural activities include manufacturing, trade, transport, and services.
• The urban population in India increased from 27.8% in 2001 to 31.2% in 2011.