Where to run Fantastic Fan wiring?

Okay, I THINK I've got it. Take a peak at the photo. Right now I've got the wiring running into the fan hole at A, but I can move it over to B. Which one is closer to where the fan's wires are? (The unfoamed area is where my fan wire is coming from. you can see it running left to right into the cutout and taped in place.)

Thanks!
TL

Thanks!
TL