Utilize the input text as a context reference, choose the right relationship between 'Monster Beverage' and 'energy drink' from the options.
Options: legal form, product/material produced, founded by, brand

Coca-Cola has a track record of minority investments in growth consumer segments, including stakes in coffee company Keurig Green Mountain Inc (GMCR.O), energy drink Monster Beverage Corp (MNST.O) and juice brand Suja Life LLC.
product/material produced