B is the correct answer.
YES TO AIRING OUT: If a CFL breaks at home, one of the best things you can do is air out the room for 5-10 minutes by opening a window or door to the outdoor environment. Learn the most important steps to take.
NO TO VACUUMING: Vacuuming is not recommended unless broken glass remains after all other cleanup steps have been taken. Vacuuming could spread mercury-containing powder or mercury vapor.