What is the strongest continuation for White?

Casual Game, https://itsyourturn.com
John Coffey vs. keith28

8 7 6 5 4 3 2 1 a b c d e f g h -1

(white to move) 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 dxc4 5. e4 h6 6. Bxc4 Bb4 7. Qa4+ Nc6 8. O-O Bxc3 9. d5 exd5 10. exd5 Bd7 11. dxc6 Bxc6 12. Bb5 Bxb5 13. Qxb5+ c6 14. Qe2+ Qe7 15. Qxe7+ Kxe7 16. bxc3

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Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight