Which comparison would best support the idea presented in this paragraph?

the cpu(central processing unit) is the main part of any computer system, housing the computer’s primary memory, its control unit, and the alu (arithmetic logic unit), which carries out arithmetic and logic functions. as the central part of the computer system, the cpu gives commands to connected devices such as the printer, the monitor, and the speakers.

a. the cpu is like an emperor sitting on a throne, sending orders to every corner of the realm.
b. the cpu is like a mechanic, keeping the rest of the computer in perfect working order.
c. the cpu is like the general out on a battlefield, calling back to the home base for instructions.
d. the cpu is like the computer’s heart, sending power- but not information- to the rest of the computer.