A few months ago, we took the next step and moved Xandr to WarnerMedia so we could accelerate our progress in building software-based entertainment platforms supported by both subscription and advertising, like the AVOD version of HBO Max we plan to launch next year.
Take context from the input text and decide on the accurate relationship between 'HBO Max' and 'WarnerMedia' from the options provided.
Options: founded by, location of formation, subsidiary, parent organization