Refer to the input text as context and select the correct relationship between 'PepsiCo' and 'Indra Nooyi' from the available options.
Options: publisher, headquarters location, employer, chief executive officer

The soda recently ditched the artificial sweetener aspartame for sucralose (or Splenda), but some longtime connoisseurs are saying it has a “nasty aftertaste” and is “unpalatable.” PepsiCo Chief Executive Indra Nooyi said it would take a few cycles to see the effect of the change.
chief executive officer