Narrow Band Internet of Things Network (NB-IoT)—BSNL and Skylo

Current Context: The Bharat Sanchar Nigam Limited (BSNL) partnered with Skylo to launch satellite-based Narrow Band Internet of Things network (NB-IoT) in India.

• This is the world’s first NB-IoT by BSNL and Skylo. 
• The IoT solution for this is developed by Skylo and this solution is connected with BSNLs satellite ground infrastructure which provides PAN-India coverage, including Indian seas. 
• This NB-IoT solution will prove useful to fishermen, farmers, and in sectors like construction, mining and logistics.
• The solution is launched to fulfil BSNL’s vision to explore technology to provide affordable and innovative telecom services and products to all core sectors of India. 
• The NB-IoT is a Low Power Wide Area (LPWA) technology which improves the power consumption of the devices, spectrum efficiency and system capacity.
• It is developed to offer a wide range of new internet of things devices and services to core sectors of India. It is compatible with 2G, 3G and 4G mobile networks.

Question: 

Q.1 Who among the following launched world’s first Narrow Band Internet of Things network (NB-IoT) in partnership with Skylo?
a. Bharti Airtel
b. Vodafone Idea
c. Reliance Jio
d. BSNL