Carbohydrates Used in Different Culture Such as Rice,maize,cassava,wheat,and Beans Are

Carbohydrates used in different culture such as rice,maize,cassava,wheat,and beans are important because they:

A) provide glucose,which is the common fuel for all cells and the only source of energy for the brain.
B) are an expensive but nutritious sources of energy.
C) are low in fiber and therefore prevent diarrhea when consumed in large amounts.
D) are rich in saturated fats which helps prevent heart disease.