A "C Note" is a colloquial term for a $100 bill in the United States. The name comes from the letter "C," which represents the Roman numeral for 100. C Notes are commonly used in everyday transactions and are easily recognizable due to their distinctive green color and the portrait of Benjamin Franklin on the front. In addition to its use in cash transactions, the C Note is also a popular choice for saving and investment purposes. Many people prefer to keep their savings in cash, and the $100 bill is often seen as a symbol of financial stability and purchasing power.