Final answer:
The incorrect statement is that CD-ROMs are high-capacity output devices, as they are used for data storage and function as input devices.
Step-by-step explanation:
The statement that is UNTRUE is: B) CD-ROMs are high-capacity output devices. CD-ROMs are actually data storage devices, and they are primarily used as an input device because they provide data to a computer system for it to process. The correct categorization for devices like printers is output devices, as they present data processed by the computer to the user in a readable form.