Clue Trivia Corner #1

Hello, it's Silas Jones. I've decided to add a new feature on this blog, the Clue Trivia Corner. Once a month, I will ask you a question that's clue-related in a post and it will be your job to vote on the poll in the corner. I'ts kind of like a test. Please keep in mind that I will not be voting, so don't base your response on the results of the poll. I will post the answer to each question once the poll is closed.

So anyway, this month the poll question is the following:

Only one of the three multiple endings is possible. Which ending is that?

Vote wisely and have fun.