Joseph is a three-year-old boy who is undernourished but otherwise healthy. His daily iron intakes average 4 mg. Which of the following is he at risk for?

Joseph is a three-year-old boy who is undernourished but otherwise healthy. His daily iron intakes average 4 mg. Which of the following is he at risk for?
A)microcytic anemia
B)macrocytic anemia
C)pernicious anemia
D)sickle cell anemia