Answer:
C: Use BIOS/UEFI to show which memory slots are used and how much memory is installed in each slot.
Step-by-step explanation:
Apart from disassembling the computer and physically examining the motherboard or installing third party software to show the memory slots used and the amount of RAM in each, you can use the information that is displayed on your system’s UEFI firmware or BIOS to check. However, the latter is best to determine. BIOS/UEFI setup is used especially when the OS is not working. Depending on the type of computer system this customer has, he or she will be required to shut the PC off and boot it up. He or She will then be required to use a particular keyboard shortcut to enter into the BIOS/UEFI setup and look for information about RAM.
Option A is wrong because the BIOS/UEFI setup will not show you the amount of RAM the PC can hold
Running info32.exe on most windows computer will give you an error dialog box