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.The marginal utility she derives from the fifth serving she eats is _____ units.
Definitions:
General Lee
A leading Confederate general during the American Civil War, best known for commanding the Confederate Army of Northern Virginia.
Battle of Sharpsburg
Another name for the Battle of Antietam, a significant Civil War battle in September 1862, known for being one of the bloodiest single-day battles in American history.
Emancipation Proclamation
An executive order issued by President Abraham Lincoln in 1863, declaring the freedom of all slaves in Confederate states that had not yet come under Union control.
Clear-Cut Victory
A definitive and unmistakable win in a contest or conflict, leaving no doubt about who the winner is.
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