Which airport was awarded the "Pollution Control Waste Recycling Excellence Award" by the Greentech Foundation for its 'zero waste to landfill' implementation?
1
Indira Gandhi International Airport, Delhi
2
Chhatrapati Shivaji Maharaj International Airport, Mumbai
3
Thiruvananthapuram International Airport Limited (TIAL)
4
Kempegowda International Airport, Bengaluru
5
Rajiv Gandhi International Airport, Hyderabad