<prompt> A 60 yr old female with ho 8 blood transfusions in 2 years. Her Hb-60gL, TLC- 5800, platelet- 3.4 lakhs, MCV 60, RBC-2.1 lakhsmm3. He is having hypochromic microcytic anemia. Which investigation is not needed?Evaluation for pulmonary hemosiderosisUrinary hemosiderinBone marrow examinationG I endoscopy  <response>: . Urinary hemosiderin 