The correct answer is: A. It is an output device.
A VDU, or visual display unit, is an output device that displays text and graphics on a screen. It is typically used with a computer to provide a visual representation of data.
Input devices are used to enter data into a computer, while output devices are used to display data from a computer. Peripheral devices are any devices that are not essential to the operation of a computer, but that can be used to add additional functionality. Hardware items are physical components of a computer, such as the CPU, memory, and storage devices.
In conclusion, a VDU is an output device because it displays data from a computer.