Take context from the input text and decide on the accurate relationship between 'Visa Inc' and 'credit card' from the options provided.
Options: operator, product/material produced, platform, employer

NEW YORK (Reuters) - A U.S. appeals court on Monday weighed whether to uphold the approval of an estimated $5.7 billion antitrust settlement by MasterCard Inc (MA.N) and Visa Inc (V.N) with merchants over credit card fees despite the objection of several major retailers.
product/material produced