In API calls, why would you reference a Data Extension's Customer Key instead of its Name?

In API calls, why would you reference a Data Extension's Customer Key instead of its Name?

• A. Because the name might not be unique.
• B. Because the Customer Key is used to identify the account.
• C. Because the Customer Key uniquely identifies the DE regardless of its name.
• D. Because API calls require both Key and Name.

Answer: (C)