Select the correct statements about Madhubani paintings:

A. To make these paintings, indigo, turmeric, colours from flowers and trees, etc., are used.

B. The paintings show human beings, animals, trees, flowers, birds, fish, etc.

C. It is a very old form of folk art and is named after the place Madhubani.

D. Madhubani is a well-known district of Rajasthan.