EDIT: THE NEW QUESTION WILL BE OUT SOON!! STAY TOONED!!
NOTE: I'm so, so sorry if you get invited when not wanted.
For this contest, all you have to do is attempt to answer the question!
(Attempt in the Comments!)
(When commenting, just say which letter you think it is! I won't reveal the answer until someone has guessed it!)
The first person to answer the question correctly, gets a full scene drawn by me!