Which of the following is the major source of Vitamin D: (A) Milk, (B) Oily fish, (C) Egg yolk, (D) Sunlight
Answer is D. Vitamin D is not strictly a vitamin since it can be synthesized in the skin, and under most conditions, this is the major source of the Vitamin D. Ref : Biochemistry by U. Satyanarayana 3rd edition Pgno : 123