EF5/6 sentence fragments

I would have sent Rollo to jail. Because he shouldn't have stabbed Mike. frag

Because he shouldn't have stabbed Mik
ze. sentence fragment

Because he shouldn't have stabbed Mike, S V.

Because he shouldn't have stabbed Mike, Rollo should be be punished.

FIX
I would have sent Rollo to jail. He shouldn't have stabbed Mike. 2 simple sentences

Rollo shouldn't have stabbed Mike, so I would have sent him to jail. 1 compound sentence

I would have sent Rollo to jail because he shouldn't have stabbed Mike. 1 complex sentence