PLS HELP Which of these situations describes a computer network?

(Choice A)

A programmer runs a program using parallel computing on their multi-CPU computer. Each CPU processes a different part of the program and stores the final results in shared memory.

(Choice B)

A plant biologist inserts a moisture sensor into a the soil of a potted plant. The moisture sensor records the moisture every minute and saves it onto an SD card for storage.

(Choice C)

A smartphone store displays 20 different smartphones for shoppers to try out. All the smartphones are on a long table and plugged into a single power strip.

(Choice D)

A company gives every employee a desktop computer and connects each of the computers to each other using wires, so that they can quickly transfer files and messages.