Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to clean up broken compact fluorescent light bulbs [title] Do not vacuum up broken glass! [step] This will vaporize and distribute all the mercury that was in the light bulb creating a much bigger problem. [title] Ventilate the room before you start cleanup. [step] Make sure that the room is isolated (doors closed, heating/ac system turned off) from the rest of the structure.

Ending1: Cover all or part of the floor with protective insulation. The insulation should be at least a few feet high to limit the amount of mercury in the room from escaping. Ending2: [substeps] This can be the case if there is an interior panel installed that is damaged. If there is, have a professional mechanic install it for you. Ending3: [title] Take off an 2 gallon (3.8 l) glass (size one) and put that glass inside a cleaning bucket, ice bucket or trash can with a lid. [step] Pour antibacterial liquid into this bucket. Ending4: Open all windows and leave the room, do not track through breakage area. Let it air out for at least 15 minutes or longer.

Answer format: ending1/ending2/ending3/ending4