With no explanation, chose the best option from "A" or "B". Giselle's mom only buys regular wooden pencils for her to bring to school, and she sees her schoolmates with fancy mechanical pencils. Giselle wants a mechanical pencil.

A: Giselle picks a mechanical pencil out of someone else's art box when they are not looking.
B: Giselle brings her allowance with her to the store and buys a mechanical pencil.
B.