Consider the following features of a border district of India and identify the district using the code given below Situated at the height of 10000 feet, which is enchanted with scenic beauty, the district is surrounded by two nations in the North and South-West. River Nyamjangchu runs through it. Potato, maize and millet are the main crops of the district. Besides monasteries, tourist attractions of the district and its surrounding places include Sella Pass, PTSO, War  memorial, Jaswant Garh etc. Losar is one of  the    prominent        festivals              of         the district.