The correct option is: (a) 1 only
Explanation:
GSLV Mk-3 is the latest version of GSLV. It can carry up to 4500 to 5000 kg satellites. Until now, India relied on EU’* Arianespace launch vehicle to send those INSAT-4 satellites. It will consist of 3 stages. 1st stage will have solid propellant, 2nd stage will have liquid propellant and 3rd stage will be cryogenic engine. GSLV MK-3 will make ISRO a competitive player in commercial launches of foreign satellites.