How should I fix my downspout?
My house has a similar situation and when I got new gutters I inquired about option A but the guy said it would actually cause issues:

It's another clog point
It will provide shade for moss to grow and destroy the roof way faster than excess water could ever hope to achieve

If you can re-slope the gutters for option B then go for it, I don't think it would look bad. You can always paint the downspout to camouflage it or buy a pre-colored downspout which closely matches the house.
I am willing to bet you have much more pressing matters to tend to which don't involve messing with gutters that work as designed :-)