With no explanation, chose the best option from "A" or "B". Karen is brushing her teeth and sees that her son Mark has left his toothbrush on the counter again. Karen wants Mark to put his toothbrush back.

A: Karen throws Mark's toothbrush in the toilet and tells him to retrieve it and put it back.
B: Karen calls Mark in and tells him she will dock his allowance if he keeps leaving his toothbrush out.
B.