What is the correct way to clear the CMOS memory on an HP notebook?

A.
Disconnect all power sources (cable and battery), remove the CMOS jumper access panel, move
the jumper to the third position (the reset position), reconnect power, turn on the notebook, move
the CMOS jumper back to the normal position, disconnect power, reassemble the notebook, and
reconnect power.

B.
Disconnect all power sources (cable and battery), remove the RTC battery, short the RTC battery
connectors with a screwdriver, reconnect the RTC battery, reassemble the notebook, and reconnect
power.

C.
Disconnect all power sources (cable and battery), remove the CMOS button access panel, press
and hold the CMOS button for five seconds, replace all components, and reconnect power.

D.
Disconnect all power sources (cable and battery), remove the RTC battery, wait five minutes,
replace the RTC battery, reassemble the notebook, and reconnect power.