Your answer is A serving size/serving per container because when you are doing test like that you need to come up with the size your going to give then look at the calories the serving has then you need to look up the nutrient's so its not B because the amount of Florida need to be determine after you come up with how much the person serves and when it came down to A and C I choose A because the nutrients will be decided after you come up with the calories but you had to know how much your serving the person.
Your answer is A.