How do you invoke the ScanJet Enterprise 9000 Diagnostics?

A.
Power Cycle the Scanner while holding down the the Tools button

B.
Press on the Tools button and the Duplex Scan buttons simultaneously for at least two seconds

C.
Select the Diagnostics Tab in the Scanner Tools Utility and click on Diagnostics

D.
Press down and hold the Tools and Simplex Scan buttons while turning on the Scanner