What is the minimum PowerShell version that supports Desired State Configuration?

What is the minimum PowerShell version that supports Desired State Configuration?

• 2.0
• 4.0
• 5.0
• 3.0       

EXPLANATION

Desired State Configuration (DSC) was first included in Powershell Version 4 (a part of Windows Management Framework (WMF) 4.0) and further improved in later versions. 

DSC enables you to declare your computer configuration in scripts and then apply that configuration to computers programmatically. The computers are configured to the desired state and remain in the desired state. 

The configuration can be applied to one or many computers, making sure they're always compliant with your requirements.

Reference: https://msdn.microsoft.com/en-us/powershell/dsc/overview