Choose the right answer from the four alternatives given below.

Which one of the following group of cities have been arranged in the sequence of their ranks i.e. 1, 2, 3 and 4 in size?

A. Greater Mumbai, Bangalore, Kolkata, Chennai

B. Delhi, Greater Mumbai, Chennai, Kolkata

C. Kolkata, Greater Mumbai, Chennai, Kolkata

D. Greater Mumbai, Kolkata, Delhi, Chennai

Greater Mumbai is the largest city in India, in terms of population.

Delhi comes second.

Bengaluru comes third.

Chennai comes sixth.

Kolkata comes seventh.

Option (A). is the closest to the reality.