I've been on an LSD/NSD for over two years.

#1 - D. Great Success. At first I did an NSD still allowing sugar and it worked fine. Much improved. I have since switched to an atkins-like diet with no starch or sugar. Works great.

#2 - A, B, and some C. I no longer eat sugars or starches, but I do eat some dairy. I still have cream and cheese in some moderation.