How Can You Determine If a Device Is an Input

How can you determine if a device is an input device or an output device?

A) An input device allows you to enter data and instructions into the memory of a device.An output device is a useful form of the processed data.
B) An input device processes data into useful forms and an output device allows you to enter data and instructions into the memory of the device.
C) An input device displays on a screen or can be printed,while an output device is used to play games or scan.
D) An input device is used to post to social media or a website whereas an output device is used to pay for items for a credit or debit card.