What is the best reply to d4, d5, Nc3 ?

I decided to analyze a couple of lines on the computer, using Chessmaster. If black plays Bf5:
Not looking good for black.
If black plays c5:
Sorry that doesn't seem to have worked.
What are chess.com messing around at!?
I had to make all the moves manually in the end! I haven't got time to comment on this line now.

What are chess.com messing around at!?
I had to make all the moves manually in the end! I haven't got time to comment on this line now.
I don't like 5...e5. Maybe it is the most ambitious and engine-perfect move, but subjectively it looks like black is overextending and spreading himself too thin, given his lack of development. I'd probably play 5...e6 instead, which at first glance doesn't seem to give white such an initiative.