In the context of the input sentence, determine the relationship between 'Apple Inc' and 'Tim Cook'.
Options: business division, chief executive officer, legal form, original broadcaster

SAN FRANCISCO (Reuters) - Apple Inc (AAPL.O) Chief Executive Tim Cook unveiled a new version of its Apple TV product with an app store and a voice-controlled remote control, part of a trio of announcements aimed at revamping its product line.
chief executive officer