I picked #2 as it was the closest, but it isn't totally accurate.
Every couple weeks, or after riding in wet conditions, I:
- scrub the chain with varsol or kerosene and an old dish brush
- dry it well with a rag
- wait a few minutes, and spray the side-plates lightly with chain lube
I typically do this after a ride, when the chain is hot and dry.
Takes 5 minutes on the bike with a center stand, 10 on the one without. I use an old scrap of cardboard to keep the junk off the tire and wheel.
If it is raining when I arrive home, I just use a little varsol on a rag to wipe off excess water, and clean/lube it before the next ride.
Easy to do, don't mind it at all.