Which airport has been recognized as the "world's most punctual airport" for the past three consecutive months, according to a report by Cirium?

• A. Indira Gandhi International Airport, Delhi
• B. Chhatrapati Shivaji Maharaj International Airport, Mumbai
• C. Netaji Subhas Chandra Bose International Airport, Kolkata
• D. Kempegowda International Airport, Bengaluru