Based on my own recent experience I'd vote for A. I've been down the C path. First with a Hagerman Trumpet, K&K Audio SUT, and Benz L2. Then with the K&K SE (uses internal SUT) and Dynavector 20XL. Both were very good in my system. However, even though my Rowland Capri preamp has MM/MC options with no SUT, I'm been using a B&O MMC2 with surprisingly great results.
Look here:
http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1200430667
Look here:
http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1200430667