Explanation:

• India and Bhutan have signed a concession agreement on the 600 MW Kholongchhu Hydropower Project.
• The 600 MW Kholongchhu project is India-Bhutan’s first hydropower joint venture project in Bhutan’s less developed eastern region of Trashiyangtse. It is one of four additional projects agreed to in 2008, as a part of India’s commitment to help Bhutan create a total 10,000 MW of installed capacity by 2020. Hence option 2nd is correct.