Utilize the input text as a context reference, choose the right relationship between 'Boeing' and 'Dennis Muilenburg' from the options.
Options: publisher, chief executive officer, manufacturer, product/material produced

SEATTLE, Sept 22 Boeing Co Chief Executive Dennis Muilenburg said he sees scope for additional 737 work going to China as the company continues to increase production rates of the single-aisle jetliner.
chief executive officer