Ann, a user, calls a technician and reports that her PC will not boot. The technician confirms the memory, power supply, and monitor are all working. The technician runs internal diagnostics on the PC, but the hard drive is not recognized. Which of the following messages will be displayed? 

Answer options:

A. NTLDR not found
B. No boot device available
C. Operating system not found
D. BIOS ROM checksum error

B