This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to frame a floor
Look up the building code for your area.
Your city will have building code, or basic requirements that homes and buildings are required to meet. If your floor isn't up to code, you might get fined and will probably be required to pull up the entire floor.

Options are: [i] The following are how to plan a building for your area : Pick a building you would like to be right at eye level (inside the building). Use an internal plan (some municipalities require very high distances to build buildings). [ii] Typically, the building code states that homes and buildings are due at least 3 years prior to inspection. These are the post offices that run down the street from your home. [iii] Know what the code is for your area before you start, because it can affect everything from the materials you need to use to the measurements you use. Your area might even require a permit for a floor to be considered up to code! Plan your floor framing layout. [iv] For example, in order to house a construction project, your floor must meet about half of the building's boundaries. On websites like canopied monetization, you'll be able to quickly find your city code.
The answer is:
[iii]