Which one of the following statements correct?

Alliance Air was created as a wholly‑owned subsidiary of Indian Airlines, established to operate regional/shuttle services — this is stated in the book extract and corroborated by a web history note [1]. The Airports Authority of India (AAI) is a civil aviation infrastructure body responsible for creating, upgrading and managing airports (it manages well over a hundred airports), not a regulator; it builds and manages aerodrome infrastructure [2]. The Directorate General of Civil Aviation (DGCA) is the statutory regulatory body that enforces civil aviation regulations, airworthiness and safety standards [2]. Therefore option (1) is correct; the other statements conflate the roles of AAI and DGCA.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 12: Transport, Communications and Trade > various parts of India. Some of these flights operate between India and the Gulf countries. > p. 32
2. [2] Indian Economy, Vivek Singh (7th ed. 2023-24) > Chapter 14: Infrastructure and Investment Models > 14.9 Airports > p. 422
3. [3] Indian Economy, Nitin Singhania .(ed 2nd 2021-22) > Chapter 15: Infrastructure > VARIOUS AGENCIES RELATED TO CIVIL AVIATION > p. 458
4. [4] https://www.civilaviation.gov.in/about-ministry/organization-setup