[laepelba]

Las direcciones: Una persona desconocida se enfrentó a cinco situaciones hipotéticas. Responde qué habrías hecho tú en esas situaciones.

No entiendo a o b en número 3:

3) Devolvió los zapatos después de usarlos una semana.
a) Habría pedido un par nuevo.
b) Me habría quedado con los zapatos viejos.

Does it mean:
He/She returned shoes after using them for a week.
a) I would have asked for a new pair.
b) I would have kept the old shoes.
???

I really don't understand. Choice "a" is supposed to be the virtuous choice. Choice "b" is supposed to be the less-than-honest choice. I don't see how "a" is the virtuous, unless I don't really understand the meaning. And I don't see what in the world "b" has to do with the context.

Help! (Thanks!)