Rearrange the sentences to make a paragraph -
A. Now divided into two separate states of India and Pakistan,
B. The population of India as a single geographical and cultural unit,
C. which have come to India throughout the fifty to sixty centuries of her long history.
D. forms one-fifth of the entire population of the world, and presents, at first sight, a bewildering variety of cultures.
Choose the correct answer from the options given below: