Refer to the input text as context and select the correct relationship between 'Rosneft' and 'Igor Sechin' from the available options.
Options: currency, chief executive officer, parent organization, headquarters location

VLADIVOSTOK, Russia, Sept 4 (Reuters) - Russia can increase its oil production to as much as 700 million tonnes of oil per year (14 million barrels of oil per day) and export 300 billion cubic metres of gas to China annually, Rosneft Chief Executive Igor Sechin said on Friday.
chief executive officer