Nutrition: Vb, Vc, Va, Ve, etc. What are the advantages of each?

Vitamin function (deficiency) comes from vitamin A night blindness, dry eye, optic atrophy and so on. Cod liver oil, green vegetables; Vitamin B 1 neuritis, beriberi, wernicke aphasia, etc. Yeast, grain, liver, soybean, meat, vitamin B2 seborrheic dermatitis, stomatitis, etc. Yeast, liver, vegetables, eggs, vitamin B3 insomnia, oral ulcers, boils, etc. Yeast, grain, liver, rice bran, vitamin B6, muscle spasm, allergic eczema, etc. Vitamin B9 pernicious anemia in yeast, grain, liver, eggs and dairy products; Vitamin B 12 pernicious anemia in vegetable leaves and liver; Vitamin c scurvy of liver, fish, meat and eggs; Fresh vegetables and fruits vitamin D rickets (rickets); Cod liver oil, egg yolk, dairy products, yeast vitamin E infertility, habitual abortion, etc. Egg, liver, fish and vegetable oil lack vitamin K thrombin, which makes it difficult to stop bleeding. Spinach, alfalfa, cabbage, liver