UPSC Prelims 2015 Science & Technology

In the context of modern scientific research, consider the following statements about ‘IceCube’, a particle detector located at the South Pole, which was recently in the news :
1. It is the world’s largest neutrino detector, encompassing a cubic kilometre of ice.
2. It is a powerful telescope to search for dark matter
3. It is buried deep in the ice.

Which of the statements given above is/are correct?