With no explanation, chose the best option from "A" or "B". Leigh is at a dinner buffet at a fine restaurant in town. Leigh wants to try a bit of everything on the menu.

A: Leigh sees the spare ribs have run out, so she grabs one from the plate of the person in front of her.
B: Leigh notices an item she wants has run out, so she asks the service staff if they have more.
B.