Refer to the input text as context and select the correct relationship between 'Elon Musk' and 'SpaceX' from the available options.
Options: member of, subsidiary, owner of, currency

SpaceX Chief Executive Elon Musk last week said a faulty metal brace likely triggered the explosion that destroyed the booster minutes after liftoff from Florida, destroying a load of cargo destined for the space station.
owner of