upgrading desktop pc from windows 8.1 to windows 10

I have  a Lenovo Desktop PC.  It's the Lenovo K450e

This is my exact computer that I bought at best buy.

It came with Windows 8.1 installed on it.

I'm trying to upgrade to windows 10.

I read this upgrade article

So I downloaded the Windows iso and burned it on a dvd.

On the download page there are various versions you can download so I downloaded these 2 versions.

Windows 10 Home 64-bit (x64)
Windows 10 Pro 64-bit (x64)

I read this article to see what version of windows is installed on my.
But when click on PC info it just says the version my computer is running is Windows 8.1.
It doesn't say Home or Pro on it.

Anyone know what the correct version I need to install?
 how to check to see if Windows 8.1 that I have on my pc is either Home or Pro?
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Ravi AgrawalCommented:
Open windows explorer

Windows key + E when pressed together will open up Windows explorer.

Go to Help last menu item and then select About Windows. You should get a dialog box showing your Windows version.

That is the way it works in windows 7. Should be similar for win8.
Right Click on windows icon in left corner of taskbar.
Choose System.

And there it is....

Or in scenario with WIN key + E  ----> right click on This PC  ---> Properties

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