What is the purpose of this command?

At the start of an investigation on a Windows system, the lead handler executes the following commands after inserting a USB drive.

What is the purpose of this command?

C: >dir / s / a dhsra d: > a: IRCD.txt
A . To create a file on the USB drive that contains a listing of the C: drive
B . To show hidden and archived files on the C: drive and copy them to the USB drive
C . To copy a forensic image of the local C: drive onto the USB drive
D . To compare a list of known good hashes on the USB drive to files on the local C: drive

Answer: C

Explanation:

This command will create a text file on the collection media (in this case you would probably be using a USB flash drive) named IRCD.txt that should contain a recursive directory listing of all files on the desk.