Which of the following statements about India's scientific and research mission in Antarctica is I are correct?
1. The first scientific base station in Antarctica was Dakshin Gangotri
2. Dakshin Gangotri is now being used as supply base and transit camp
3. The Maitri station is manned throughout the year for scientific activities
Select the correct answer using the code given below :

Options

A. 1 only
B. 2 and 3 only
C. 1 and 2 only
D. 1, 2 and 3