Utilize the input text as a context reference, choose the right relationship between 'Brian Hartzer' and 'Westpac' from the options.
Options: platform, employer, parent organization, founded by

ANZ breaks ranks Before a Senate hearing last week both Westpac chief executive Brian Hartzer and AMP Ltd chief executive Craig Meller spoke in support of the ABA's position but when pressed each said their organisations would give their "in principle" support for a scheme of last resort .
employer