Can I attach a copy of schedule K-1 to my PA state taxes and then e-file? I am getting prompted to mail my taxes by TurboTax & I want to know if there is a way around it?

I also saw that Turbo Tax is saying that I have to send documents to Pennsylvania Department of Revenue and also to Bureau of Corporation Taxes for verification. 

If I have to file by mail, I want to know if I send the copy of my entire tax return to both locations? Or if I only send the K-1 and PA40 to the Bureau of Corporation Taxes.