Correct option is A
On
5 June 2016,
India and the United States signed two key agreements focusing on
solar energy and
nanotechnology, strengthening their cooperation on clean energy and advanced technology.
Information Booster:
This agreement was part of the broader
India-US energy partnership aimed at promoting sustainable energy and advanced technological cooperation.
Additional Information:
·
Option (b), (c), (d): None of these pairs signed agreements on these topics in June 2016.