I would probably use a checklist (B), because the order in which you complete items on a checklist does not really matter, just don't forget to check them after completing them. A diagram might also be okay, but it depends on what it shows.
Ideal weight in pounds divided by 2.2 give you weight in kilograms (kg) the Resting Energy Requirements (RER) based on this ideal weight
o 70 x [(ideal weight in kg)] ¾
or 70 x [(ideal weight in kg) to the ¾ pow