Well I sat it too and found it the worst of the week overall.
As to the breakfast question, I thought that a moderate / high protein diet and a mod / high carb diet would be appropriate rather than a low one. My Mother always told me not to skip breakfast so I'd think that it should be about 25% of your intake and thus I went for A. However, no idea if it was right.
Glad other people found it equally hard, but I hope we all do okay!
esvdx