The correct answer is B - Pectin.
Pectin is not part of a grain.
A grain is composed of :
1. Bran - outer layer of a grain and it contains fiber, B-Vitamins and antioxidants.
2. Endosperm - middle largest layer containing mostly carbohydrates and protein as well as small amounts of vitamin B and minerals.
3.Germ - it is the inner component of the grain and contains antioxidants, phytochemicals, B vitamins and healthy fats.
4. Husk or hull - this is the outer shell or coating of seed and which plays a protective role in protecting the inner contents of the seed.