[quote=@Darcs]
The answer's at the end of the book


[/quote]

Yeah i tried looking and It wouldn't let me look at the solutions.

[quote=@mdk]
Pregnancy test.

edit: Looked up the answer, and I like mine better.
[/quote]

And that was the answer I was leaning toward until i finally figured it out. I didn't look the solution up but a friend and I both agreed on an answer and it turned out to be right.