Amaya, a 12-year old, was brought into the clinic by her grandmother. She is worried about Amaya because she complains about being tired all the time. She also says that Amaya experiences short bouts of dizziness and lightheadedness. When asked, the grandmother says that Amaya started her menstrual cycles about a year ago and they are quite heavy at times. Amaya may be experiencing _____. a. Iron-deficiency anemia b. Pelligra c. Beriberi d. Goiter