What should you do first?

You run Dism.exe as shown in the exhibit. (Click the Exhibit button.) You need to copy a file from the image. What should you do first?

A.
Run imagex /cleanup.

B.
Run dism.exe /cleanup-wim.

C.
Run imagex /mount e:sourcesboot.wim 1 c:empty.

D.
Run dism.exe /mount-wim /wimfile:e:sourcesboot.wim /index:0 /mountdir:c:empty.