Jerry i do not agree with you. Your right when you sais that FC when renders do it in uncompress.
Is right that if you start with a 411 or 420 you are using the color information from a pixel to tint three other pixels, but if you are color correcting you are getting a new croma value in each of these pixels. If you go back to to 411 or 420 you are throwing away the croma of three in every four pixels.
Christian, when I make a DVD I edit and color correct in DV, but before to export to Compressor I chage the setting of my sequence to 10b uncompress. The diference with exporting from the DV time-line is huge. So I recommend you your opction “C”.
Salud,
rafael