A 68-year-old woman presents with fatigue and dyspnoea on exertion. Full blood count shows Hb 88 g/L, MCV 72 fL, ferritin 8 µg/L and transferrin saturation 8%. She has no obvious bleeding history. What is the most appropriate initial management?AOral ferrous iron supplementation and investigation for gastrointestinal blood lossBImmediate red cell transfusion onlyCErythropoiesis-stimulating agent therapyDFolic acid supplementation aloneEVitamin B12 injectionsCheck my answer