Arrange the following town/city in ascending order of their size and functions:

(A) City
(B) Town
(C) Conurbation
(D) Million City

Choose the correct answer from the options given below:

(B), (A), (C), (D)

The correct answer is Option (4) → (B), (A), (C), (D)

(B) Town: Generally smaller than a city, with a lesser population and fewer functions.
(A) City: Larger than a town, typically with a higher population and more functions.
(C) Conurbation: An extended urban area formed by the growing together of several towns or cities.
(D) Million City: A city with a population of one million or more.