I am at a point where I am trying to decide on languages that are good for my 9 year old. C# is not a choice I had thought of; more Scratch and some online tuto

I am at a point where I am trying to decide on languages that are good for my 9 year old. C# is not a choice I had thought of; more Scratch and some online tutorials using Ruby. I have access to C# at home and use it at work so that makes it a candidate, but what is your motivation for C# for children? I would not mind going down that path. Do you envision coupling it with other apps or resources? What would be your approach in the introduction stages? Thanks in advance.