A Certkiller .com technician needs to reinstall the operating system on a customer’s computer.
How would the technician BEST explain this to the customer?

A.
I will need to rebuild your system.

B.
I will need to restore your system and data loss may occur.

C.
I will need to crash your system and reload it.

D.
I will need to format the hard drive and reinstall all your software.