The correct option is: (b) 2 and 3 only
Explanation:
Thirty Meter Telescope will be the second largest of the existing and announced extremely large telescopes (ELT) which is under construction on Mauna Kea in Hawaii. The TMT will enable scientists to study fainter objects far away from earth providing information about early stages of the evolution of the universe. As a founding member of the important international scientific project, India will be a 10 per cent partner in the project and 70 per cent of its contributions will be "in kind".