how to figure out which version my debian is?

[XSun771]

Please fill out the below information:

• Your Windows build number: (Type ver at a Windows Command Prompt)

Microsoft Windows [版本 10.0.17763.678]

• What you're doing and what's happening: (Copy&paste the full set of specific command-line steps necessary to reproduce the behavior, and their output. Include screen shots if that helps demonstrate the problem.)

I would like to know the version of debian which I'm suing via WSL. So I input 'uname -a' in WSL shell, but it report like following:
Linux DESKTOP-L79Q7C3 4.4.0-17763-Microsoft #379-Microsoft Wed Mar 06 19:16:00 PST 2019 x86_64 GNU/Linux

• What's wrong / what should be happening instead:

I can't get any useful information about the version. is it debian 9? is it debian 10?

[Biswa96]

Command cat /etc/os-release.

[rdp]

Unrelated but would be nice if wsl --list --online listed which version of Debian it can install :)