It depends on how much walking you plan to do. If you mean "walking"
as in shopping at the mall, or walking tours, I would not pick any of the choices offered. I have problem feet with arthritis and painful bunions. For serious walking, I wear New Balance walking shoes. No, they're not fashionable, but for me, these shoes create a pain-free walk so that I can enjoy my outing.
If you're just doing light walking and some sitting, then A is really cute.