Which company has recently signed a MoU with the Ministry of Railways for modernization of telecommunication Railways for public safety and security services?
1
Vodafone Idea Limited (VIL)
2
Mahanagar Telephone Nigam Limited (MTNL)
3
Bharat Sanchar Nigam Limited ( BSNL)
4
Bharti Airtel
5
Centre for Development of Telematics (C-DoT)