I'm looking for some opinions on where to place two rear surround speakers. I want to setup a 5.1 surround sound system for a small 12x12 room. Based on the ceiling layout and attic access, I can think of three locations I can install in-ceiling/in-wall speakers. I've marked the accessible locations A, B, and C in the image. Can any one give me any suggestions? Thanks, Rich http://imageshack.us/a/img843/8206/photoxbi.jpg