A 45-year-old premenopausal woman presents with microcytic anaemia (Hb 9.5 g/dL, low MCV, low ferritin). She has no obvious heavy menstrual loss and no GI symptoms. What is the most appropriate initial management?AStart oral ferrous sulphate and investigate for underlying cause including GI malignancyBGive blood transfusion and no further testsCStart oral iron and assume menstrual loss as the cause without questionsDStart Erythropoietin injectionsEReassure that this is likely dietary and no tests are neededCheck my answer