Question 6: Carlos has many customers in his company file. To improve navigation, he wants to clean up his customer list by removing those he's pretty sure won't be coming in again. What's the most efficient way for Carlos to do this? Answer: A. Delete the unwanted customers. B. Put an asterisk (*) before the unwanted customer names. C. Edit the unwanted customer names to the names of new customers. D. Mark the unwanted customers as inactive