Why might a very high-fiber diet be harmful for malnourished people, the elderly, and young vegan children? a. low fluid intakes among these groups increase risk of intestinal blockage. b. risk of heart disease is higher among these group. c. the small amounts of food consumed among these groups can result in inadequate energy or nutrient intakes. d. risk of hypoglycemia is higher among these groups e. high iron and zinc intakes among these groups lead to chelation interactions?