If could be B or also C still kinda confused with the question but if I’m wrong then I’m sorry :(
Oncology, this is .......can I help you................
Answer: Vitamin C, Potassium and Iron are considered to be shortfall nutrients.
Proteins are nutrients but they are considered as common shortfall nutrients. People can be lacking in proteins and these three are the very most helpful ones! :)
You can use vinegar on it if your buying box food read the information at the back
