Use the following to answer question: 
-(Table: The Utility of Macaroni and Cheese) Use Table: The Utility of Macaroni and Cheese.Carmen loves eating macaroni and cheese on Thanksgiving.Carmen's total utility is maximized after she eats the _____ serving.
Definitions:
Overseas Marketing
The practice of promoting and selling products or services in foreign countries beyond the company's home market.
Revenue Tariff
A duty imposed on imported goods primarily to generate income for the government rather than to restrict imports or protect domestic industries.
Venetian Glass
A type of glass made in Venice, Italy, renowned for its craftsmanship, color, and intricate designs.
Service Tax
A tax levied by the government on service providers on certain service transactions, but is actually borne by the customers.
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