Okay, I was going to vote, but I'm definitely the minority here - well, I guess the only one - I really like A and C. :wink: I like how they bring the angles out from the center and they are bold and unexpected.
But NorBana's vote is the most important! LOL. I do agree with Izabella that maybe the yellow would work better as the cornerstones. With it as the inner border, my eye goes straight there, rather than seeing the quilt overall. Perhaps switching places between the yellow and lighter pink?