<prompt> A 40 year old man has megaloblastic anemia and early signs of neurological abnormaliity. The drug most probably required is:Folic acidIron sulphateErythropoietinVitamin Bu  <response>: Ref: KDT 6e p591 Deficiency of vitamin B12 results in megaloblastic anemia and demyelinaction. It can cause subacute combined degeneration of spinal cord and perpheral neuritis. 