With no explanation, chose the best option from "A" or "B". Jessica is going through her evening routine before bedtime and just put some toothpaste on her toothbrush and wet it under running water. Jessica wants to finish brushing her teeth.

A: Jessica makes sure to turn the faucet off as soon as her toothbrush is wet and turns it on again to rinse the brush off once she’s done brushing.
B: Jessica leaves the faucet running while she brushes her teeth.
A.