Which of the Following Is Not True About the Effects

Which of the following is not true about the effects of undernutrition in poor countries?

A) Iron and zinc deficiency both can lead to poor immune function.
B) Ill health that results from nutritional deficiencies can diminish the ability of citizens to perform at peak levels of physical and mental capacity.
C) Symptoms of underweight rarely result in deficiencies.
D) People in poor countries often have greater nutrient requirements for iron because they must combat rampant parasite and other infections.