Identify the sentence that correctly uses the indefinite article.

A

In an big city like Mumbai, we see lot of rubbish being thrown from households and factories.

B

In big city like Mumbai, we see a lot of rubbish being thrown from households and factories

C

In a big city like Mumbai, we see a lot of rubbish being thrown from households and factories.

D

In a big city like Mumbai, we see an lot of rubbish being thrown from households and factories.