Utilize the input text as a context reference, choose the right relationship between 'Elon Musk' and 'SpaceX' from the options.
Options: location of formation, employer, brand, 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.
employer