Final answer:
The MC option is NOT a unit value option for the DATEDIF function.
Step-by-step explanation:
The MC option is NOT a unit value option for the DATEDIF function. The DATEDIF function is a built-in function in Excel, used to calculate the difference between two dates in various units such as months, days, and years. The available unit value options for the DATEDIF function are D (for days), Y (for years), and YM (for months).