<prompt> A patient has subclinical folate deficiency. Which of the following drug cannot precipitate megaloblastic anemia in this patient?AlcoholMetforminProguanilChloroquine  <response>: Megaloblastic anaemia can be caused by a deficiency of folic acid or vitamin B12. The drugs that can result in a deficiency of folic acid include:B B12 and folic acid deficiencyA AlcoholT TrimethoprimS SulfasalazineM MetforminA Antifolates Methotrexate, pyrimethamine, proguanilN N2O 