What does BW stand for as per the Koeppen climate classification?

In which type of climatic region do Uttar Pradesh and Bihar fall as per Koppen’s classification scheme?

As per Koppen's classification of climate, which one of the following is the suitable description of North-East India including North Bengal?

According to Koppen's climatic classification, the climate of North Bihar may be explained as:

According to Koppen's climatic classifications, the Great Northern Plains of India have which one of the following climates?

In Koppen's Climatic classification of India the central Ganges valley is represented by :