A 24-year-old man presents with fatigue and exertional dyspnoea. Hb is 85 g/L, MCV 70 fL, ferritin 5 µg/L, and transferrin saturation 8%. He has no red flag GI symptoms. What is the most appropriate first-line management?AOral ferrous iron supplementation with dietary adviceBImmediate red blood cell transfusion to Hb >120 g/LCIntravenous iron for all patients with iron deficiency anaemiaDNo treatment; repeat blood work in 6 monthsEStart vitamin B12 injectionsCheck my answer