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

How to add large numbers
Write any two or more multi-digit numbers in a vertical column.
This method is sometimes called " the traditional method. " it involves adding the numbers in units of single digits, then by units of tens, then by units of hundreds.

Pick from: (i) This is accomplished by working from right to left. Start by adding the figures 383 + 412 + 122. (ii) This is the only method you will use in this way. The vertical column should be no more than 2 inches (5.1 cm) wide. (iii) One column can range anywhere from ten to thirty units. For example, an example of a nine-digit number would be eight. (iv) Essentially, it's just like your regular column. In its simplest form, all you have to do is a single process called " converting.
(i)