Utilize the input text as a context reference, choose the right relationship between 'iPhone' and 'Apple Inc' from the options.
Options: distributed by, chief executive officer, manufacturer, platform

SAN FRANCISCO, Sept 9 (Reuters) - Apple Inc unveiled the iPhone 6S and 6S plus on Wednesday, the latest iteration of its lucrative smartphone that offers 3D touch, a display technology that responds differently depending on how hard users press their screens.
manufacturer