A 65-year-old woman presents with fatigue. Blood tests show: Hb 90 g/L (115-165), MCV 70 fL (80-100). Ferritin 12 µg/L (30-300). She has no overt bleeding or GI symptoms. What is the most appropriate management according to NICE guidelines?AStart oral iron replacement and review in 4 weeksBUrgent referral (2-week wait) for upper and lower GI endoscopyCRoutine referral for upper and lower GI endoscopyDCoeliac serology testing onlyEHaemoglobin electrophoresisCheck my answer