The Nutrition Facts label usually tells us about the percent of various nutrients in one serving - C
The correct answer in this case is C.
The Nutrition Facts label can be found on various if not all food items and always tell us the nutritional value of our food items for one serving as well as for 100g. It can be used as a good guideline to know how healthy a certain food is.
The answer to your answer is B because who cares what your freinds think,from a personal experience I shouldn't but I do,but still I shouldn't and neither should you or anyone else for that matter.