B) Oh man, where to start? "Code of the Woosters" is a classic. And I love "Right Ho, Jeeves", if I'm thinking of the right story. It's hard to keep all the Jeeves stories straight. "Leave It to Psmith" is great, too.
As for characters, Bertie Wooster is my favorite, because he's such a lovable, kind-hearted idiot. And I just love his narration style; especially the way he abbreviates words for no reason, "like eggs and b." and "I sank into a c. and passed an agitated h. over the b." So unnecessary and hilarious.
I also really like Psmith, and Uncle Fred, and of course Jeeves. I think my favorite female character is Aunt Dahlia.
What about you?