What does a blinking red power button indicate on an HP Z series workstation?

A.
The power supply is in an error state.

B.
The computer is turned on.

C.
The computer is in an error state.

D.
The computer is in sleep mode.

Explanation:
http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/mostViewedDis
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