Where's the brake light bulb on 92 Chevy Silverado Pickup?

[Chad W]

My 1992 Chevy Silverado is like this one. http://www.2devons.com/blog/wp-content/uploads/2007/08/chevy1992frontw.jpg

And I was wondering which of the bulbs are the brake light bulbs? Is it the top or the middle one?

Thanks