What are two possible ways to achieve the goal?

You have five computers that run Windows 8.

You need to perform an upgrade installation of Windows 10 on the computers.

What are two possible ways to achieve the goal? Each correct answer presents a complete solution.
A . Apply an image of Windows 10 by running imagex.exe.
B . Start the computers from Windows PE, and then run setup.exe from a network share that contains the Windows 10 installation source files.
C . While signed in to Windows 8, run setup.exe from a network share that contains the Windows 10 installation source files.
D . Start the computers from a bootable USB drive that contains the Windows 10 source files.
E . Apply updates by using Windows Update.

Answer: D

Explanation:

http://www.laptopmag.com/articles/how-to-upgrade-windows-10