Multi-choice problem: Continue writing the next sentence in this paragraph:

How to cut crown molding inside corners
Measure the angle of the corner.
Use an adjustable protractor to measure the actual angle of the inside corner. Divide this measurement in half to determine the number of degrees each cut will need to be set to.

Select from the following. [i] The exact angle used will depend upon the measure in your measuring tool. Divide the angle of the outside corner by 2.5 inches (3.8 cm), since the angle of a corner is the angle at which the crown molding is created. [ii] Place the right side of the protractor against one wall forming the corning. Open up the left side of the protractor, extending it all the way open until it is perfectly flat against the wall on the other side of the corner. [iii] Before you cut, the prepared pieces will be roughly one foot (60 cm) long, so doing some calculations will help you to see how long each piece will be. Determine the approximate height that each corner will have. [iv] Measurements by inches cannot be measured with an actual angle; in other words, conventional measurements must be set to a measurement of 1.5 inches (3.8 cm) or less. Without the degree set, the end result will give an angle of 5 inches (12.
[ii]