Which of the following pairs is NOT correctly matched?

1. A

   Vitamin B6 – Rice bran

   (a) Vitamin B6 – Rice bran. Pyridoxine is present in cereal bran; this pair is treated as correctly matched.

2. B

   Vitamin B2 – Cod-liver oil

   (b) Vitamin B2 – Cod-liver oil. Riboflavin is not the signature vitamin of cod-liver oil; that oil is classic for vitamins A and D. The mismatch is the official key. (b) Official key.

3. C

   Vitamin E – Wheat germ oil

   (c) Vitamin E – Wheat germ oil. Tocopherols are abundant in wheat-germ oil; correctly matched.

4. D

   Vitamin K – Alfalfa

   (d) Vitamin K – Alfalfa. Leafy alfalfa is a textbook plant source of vitamin K; correctly matched.

Summary. Official key is (b). The B2–cod-liver-oil pair is wrong: cod-liver oil is A and D. B6-bran, E-wheat germ and K-alfalfa are the sound pairs.