What is the relationship between 'MasterCard' and 'credit card' in the context of the input sentence.
Options: product/material produced, member of, currency, director/manager

When a consumer pays for a sweater at a department store with a credit card, three parties usually get involved: money moves from the bank that issues the consumer's credit card through a network like Visa or MasterCard to the bank that processes transactions for the retailer.
product/material produced