Computer programming

A developer wrote an algorithm for a program that automatically downloads the installer for some other program. It takes the installer site link and the system name as input and also starts installation after downloading.

There are several variants of this algorithm below. Which of them is correct?

A.

1. go to the site with the installer
2. choose the operating system
3. download the installer
4. start installation

B.

1. go to the site with the installer
2. download the installer

C.

1. print "Hello, user!"
2. open bash
3. download the installer
4. start installation

D.

1. go to the site with the installer
2. choose Linux
3. start installation