Time Limit

$95$:$29$

If you press the key corresponding to letter A on the keyboard, what process is carried out inside the CPU to display the letter on the screen?

A$.$ The CPU stores the keystroke as the letter $\text{'}A\text{'}$ and displays it on the screen.

C$.\text{'}$A$\text{'}$ is converted to binary code, which the CPU processes. The computer then converts the code back $\text{'}$A$\text{'}$ for display.

B$.$ The keyboard transfers the letter $\text{'}A\text{'}$ directly to the monitor, without passing through the CPU.

D$.\text{'}$A$\text{'}$ is converted to special characters, which the screen translates back to $\text{'}$A$\text{'}$ for display.