NTPC Renewables Energy Signed PPA with GUVNL

Current Context: The wholly-owned subsidiary of NTPC Ltd, named NTPC Renewable Energy Ltd has signed a Power Purchase Agreement (PPA) with Gujarat Urja Vikas Nigam Ltd (GUVNL).

• Under this agreement, NTPC Renewable Energy Ltd will sell power from its 150-megawatt solar power project to GUVNL at a rate of Rs 2.20/unit.
• After this agreement, the NTPC Renewable Energy Ltd’s total capacity under TBCB (tariff-based competitive bidding) tenders has reached 1.4 GW.
• Static Part: 
• HQ of NTPC Ltd: New Delhi
• HQ of GUVNL: Vadodara, Gujarat

Question: 

Q.1 Which organization signed Power Purchase Agreement (PPA) with Gujarat Urja Vikas Nigam Lt (GUVNL) in May 2021?
a. Power Grid Corporation Of India
b. NTPC Renewable Energy Ltd
c. NHPC Limited
d. Tata Power