The survey took place in June 1958.
V. K. Raina, a renowned Indian geologist, led the expedition.
The Siachen glacier was the only glacier surveyed during the expedition.
Pakistan expressed concerns and protests about India's presence on the glacier during the survey.
How many statements given above are correct?
(a) Only one statement
(b) Only two statements
(c) Only three statements
(d) All four statements