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.
What is the relationship between 'Visa Inc' and 'credit card' in the context of the input sentence.
Options: operator, employer, product/material produced, platform