I am to take it then that you decline to say where you were at the time that Mr. Mace positively recognized you as entering the shop to purchase strychnine?

Does it follow that "So, even though Mr. Mace positively places you at his shop buying strychnine, you refuse to provide an alibi of where you actually were at that time?"?
Pick from:
(1). yes
(2). it is not possible to tell
(3). no
(1).