Baseboard Trim in Sloped Room

So I had to slope the floors in a room I've been working on in order to avoid an unacceptable transition at the doors. It's all in plane, but slopes 1.25" over 11'. Now I'm putting in baseboard trim. It is 5" board with 2" moulding on top. Would you:

A) Make the trim level at the top and tapered on the bottom (i.e. go from 7" on one end of room to 5.75" on the other)

B) Follow the floor and have the top of the trim not be level.

C) Split the difference.

?