Faced with a live computer or laptop at a crime scene, when the investigator needs to preserve the evidence that probably only exists in RAM and requires the investigator to work with the computer system, which means changes will be made to the data, it is best if the investigator considers the: A$.$ Digitally defined requirements A$.$ Digitally defined requirements B$.$ Order of Volatility B$.$ Order of Volatility C$.$ Operational function format C$.$ Operational function format D$.$ System Bus D$.$ System Bus E$.$ The amount of open storage space on the computer