What is the relationship between 'AirAsia' and 'Kuala Lumpur' in the context of the input sentence.
Options: distribution format, location of formation, product/material produced, chief executive officer

The AirAsia group is using Bali as a hub, meaning travellers can also fly on from there to other destinations like Jakarta, Bangkok, Singapore and Kuala Lumpur if they want a longer Asian holiday.
location of formation