Which individual from the list below is at highest combined risk for developing iron deficiency anemia?

• A. A 19-year-old vegetarian woman who menstruates intensely and is in a rapid growth phase after starting university athletics
• B. A 40-year-old omnivorous male with stable body weight who exercises moderately and consumes meat daily
• C. A 30-year-old postpartum woman who receives intravenous iron therapy immediately after delivery and has been counseled on diet
• D. A 25-year-old male bodybuilder who eats meat frequently and takes low-dose multivitamin without mineral excess

Answer: (A)