challenge: What is the ownership structure of ATMA, the company that operates ATMA Atyrau Airport?
  
  A. Mağdenli Yer Hizmetleri and Atyrau Regional Administration each own 50%
  B. The airport is state-owned and operated by the Government of Kazakhstan
  C. Mağdenli Yer Hizmetleri owns 75% and Atyrau Regional Administration owns 25%
  D. Atyrau Regional Administration owns 100%
  Answer: 