Wines are produced from fermentation of crushed grapes. What causes the either white or red color of wine?

A) In white wine production, additional aging removes pigments by oxidation.
B) To produce white wine, red pigments are chemically removed prior to bottling.
C) Additional fermentation degrades the red pigments of red wine, rendering it white.
D) To make white wine, grape skins are removed (pressing) before inoculation with yeast.
E) Ultracentrifugation of red wine removes pigments, leading to rosé or white wines.