Utilize the input text as a context reference, choose the right relationship between Whopper and Burger King from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

The proposed mashup of the Big Mac and Whopper would include elements of each, such as flame-broiled beef patty and a middle bun, according to a website Burger King set up.

Answer: manufacturer