Which two actions should you perform?

A client computer runs Windows 8.1 and has a 1 TB hard disk drive. You install several third- party desktop apps on the computer. The hard disk drive has very little available space.
After you install an app update, the computer becomes unresponsive.
You have the following requirements:
Return the computer and applications to an operational state.
Free additional hard disk space.
You need to meet the requirements by using the least amount of administrative effort.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Run the Remove everything and install Windows feature.
B. Configure the maximum disk space usage for System Restore to 1%.
C. Configure the maximum disk space usage for System Restore to 5%.
D. Run the Refresh your PC without affecting your files feature.
E. Perform a system restore on the client computer.

Correct Answer: BE
Explanation/Reference:
The default value for System Restore is 5%. In order to free up some space, we need to lower it, in this case to 1%.

http://windows.microsoft.com/en-us/windows-8/restore-refresh-reset-pc How to refresh, reset, or restore your PC
If you’re having problems with your PC, you can try to refresh, reset, or restore it. Refreshing your PC reinstalls Windows and keeps your personal files and settings. It also keeps the apps that came with your PC and the apps you installed from the Windows Store. Resetting your PC reinstalls Windows but deletes your files, settings, and apps -- except for the apps that came with your PC. Restoring your PC is a way to undo recent system changes you’ve made.