Consider the following statements and choose the correct ones.
1. The prestigious Gold Standard Foundation (GSF) certification has been awarded to the Kolkata Metro, on 2 February, 2014.
2. This certification is given for using the energy efficiently.
3. Kolkata Metro has become the first ever railway system in the world with GSF certification standard.
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 only
(d) 2 only