(D) Sikkim state borders Tibet in the north and northeast,Bhutan in the east, Nepal in the west. Sikkim is also located close to Siliguri Corridor near Bangladesh. Sikkim is the least populous and second smallest among the Indian states. A part of the Eastern Himalaya,Sikkim is notable for its biodiversity, including alpine and subtropical climates as well as being a host to Kangchenjunga, the highest peak in India and third higheston Earth