Write the next sentence in the following story.

How to remove mold and mildew
Know that mold is essentially caused by moisture.
Mold is a moisture problem. If you clean up your mold but don't solve your moisture problem, you're just inviting mold to come back at a later date.

Choices:
I. This can cause it to restart in any given year. Mold is also caused by bacteria causing the mold to get worse.
II. Mold may cling to surfaces and will eventually fall off, the natural result of that mold. Extremely dry, enclosed areas, such as ceilings and floors, may also cause mold build-up.
III. Moisture damages mold especially due to the presence of bacteria. Increased moisture causes you to have mold, so mold should be removed, especially if your mildew outbreak started several years ago, and also because you ingest more air.
IV. Clean and dry water-logged or water-damaged areas within 24 hours to prevent mold from growing. Mold often presents itself in bathrooms (because of showers) and kitchens (because of sinks).. The answer should be
IV.