What are the correct version numbers for C#?

Question

What are the correct version numbers for C#? What came out when? Why can\'t I find any answers about C# 3.5?

This question is primarily to

Answer 1

VERSION_____LANGUAGE SPECIFICATION______MICROSOFT COMPILER

C# 1.0/1.2____December 2001^?/2003^?___________January 2002^?

C# 2.0_______September 2005________________November 2005^?

C# 3.0_______May 2006_____________________November 2006^?

C# 4.0_______March 2009 (draft)______________April 2010^?

C# 5.0; released with .NET 4.5 in August 2012

C# 6.0; released with .NET 4.6 2015

C# 7.0; released with .NET 4.7 2017

C# 8.0; released with .NET 4.8 2019