The correct answer is C. Both 1 and 2.
The Spiti River originates from the Kunzum range in the Himalayas. It flows through the Spiti Valley in the Indian state of Himachal Pradesh and meets the Sutlej River at Namgia in the Kinnaur district.
The Spiti River is a major tributary of the Sutlej River. It is a perennial river and its water is used for irrigation, drinking water, and hydroelectric power generation.
The Spiti River is a popular tourist destination. The river valley is home to a number of monasteries and temples. The river is also a popular destination for rafting and kayaking.