You need to ensure that the .abc files are inventoried

Your network contains a System Center 2012 Configuration Manager environment. Software
Inventory and Hardware Inventory are enabled for all of the client computers. All of the client
computers have an Application named App1 installed. App1 saves files to the C:\ABC folder.
All of the files saved by App1 have a file name extension of .abc. You configure Software
Inventory to inventory all of the files that have the .abc extension and the .exe extension.
After six months, you discover that some of the client computers fail to inventory .abc files.
All of the client computers inventory .exe files. You need to ensure that the .abc files are
inventoried. What should you do?

A.
Modify C:\Program Files\App1 \NO_SMS_On_Drive.sms.

B.
Delete C:\Program Files\App1 \NO_SMS_On_Drive.sms.

C.
Modify C:\ABC\Skpswi.dat.

D.
Delete C:\ABC\Skpswi.dat.

Explanation:
http://technet.microsoft.com/en-us/library/hh691018.aspx
How to Exclude Folders from Software Inventory in Configuration Manager
You can create a hidden file named Skpswi.dat and place it in the root of a client hard drive
to exclude it from System Center 2012 Configuration Manager software inventory. You can
also place this file in the root of any folder structure you want to exclude from software
inventory. This procedure can be used to disable software inventory on a single workstation
or server client, such as a large file server.
Note: Software inventory will not inventory the client drive again unless this file is deleted
from the drive on the client computer.