As per Koppen’s classification of climate, which one of the following is the suitable description of North-East India including North Bengal ?
1) Tropical monsoon rainforest (Amw)
2) Sub-tropical monsoon rainforest (Am)
3) Tropical wet and dry climate (Monsoon Savannah) (Aw)
4) Humid sub-tropical climate with dry winter (Cwg)
4) Humid sub-tropical climate with dry winter (Cwg)