Indian Space Research Organization and the Airport Authority of India have recently signed a memorandum of understanding to installa space-based augmentation system (SBAS) to render the Global Positioning System signal suitable for civil aviation over the Indian airspace. What is the name of the SBAS?

Options

A. 1.GAGAN
B. 2.PAWAN
C. 3.AAKASH
D. 4.NABH