Who was Sasuke referring to when he said "so he's still around?" (poll 6376019)

Who was Sasuke referring to when he said "so he's still around?"

He was referring to Orochimaru. I definitely think Orochimaru is the one with all the answers to all these mysteries.

It's Uchiha Shisui. Why else would Sasuke think of him before coming to his conclusion? I also think there's a possibility Shisui may be Tobi...

Sasuke was referring to Uchiha Madara and Uchiha Madara may also be the one with all the answers as well.

*Mind explodes from overdose of confusion.*

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