How can you replace a system file if the OS won’t boot?

A customer has accidentally deleted some operating system files from the root of his hard drive, and he’s brought the system to you. The system shows this message when booting: “NTLDR is Missing.” What’s the best way to investigate the extent of the damage?

A) Use the Windows Recovery Console

B) Launch Safe Mode

C) Use “Last Known Good Configuration”

D) Use Automated System Recovery