I chose the very unpopular first one.
If Molly is handling the body at the morgue, why would there be a need for DNA evidence?
John saw him jump. An eye witness who is the man's friend. The body slumped on the ground was his (albeit not dead) & other saw it too, a 'media personality's body'.
There was no need for DNA evidence. And no need to have the body 'look like Sherlock'. Often in traumatic deaths, a viewing of the body can be disallowed by the authorities.
All that was needed was a body to put in the coffin. And really that wasn't even needed; just weight it down.
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Also, please note that sentences can also end in full stops. The exclamation mark can be overused.
Sherlock Holmes 28 March 13:08
Mycroft’s popularity doesn’t surprise me at all. He is, after all, incredibly beautiful, clever and well-dressed. And beautiful. Did I mention that?
--Mark Gatiss
"I know that you believe you understand what you think I said, but I’m not sure you realize that what you heard is not what I meant."
Robert McCloskey