As of 2018, which airport has the longest runway in the world?

I should have gone with China its always China.

luckycatfay, is the selection among the answers and if the question has anything to do with the biggest most or largest thing China isn't happy unless they have it.

Guessed China, and was correct. Didn't realize the altitude though. 😬

must it probably be very long!! love to see it!!