Selectively (by category) share on Facebook

I use Jetpack-Publicize, which works great, but now I need to share posts selectively by category on more than one Facebook page. J-Publicize just publish everything, regardless the category, to a page, or more than one.

Explain better, I have categories A and B on my blog. I would like to share posts in category A to Facebook page FB-A and posts in category B to page FB-B.

Does anyone know a plugin that does that?