This brings up the issue of handedness: stem in the left hand, or stem in the right hand? I'm guessing you're right-handed, thus the left end is the pointy tip of the corn?
I eat corn exactly as you do in (C) (more or less in columns; clear a column of all corn, then shift over to the right exactly one mouth width). The difference though is that I hold it with the pointy end to my left and the stem end to my right, but I start at the pointy end. I'm left-handed.
