As a Nurse Examines His Assignment, He Notes That One

As a nurse examines his assignment, he notes that one of his patients had a gastric bypass to reduce her large body mass index six months ago.The patient is profoundly anemic, and is complaining of memory loss and periodic hallucinations.A folate deficiency has been proposed.The nurse believes that this provisional diagnosis is invalid because:

A) Folate-deficiency anemia does not produce neurological symptoms.
B) Folic acid deficiency has only a minimal impact on red blood cell counts.
C) Iron-deficiency anemia is more common among gastric resection patients.
D) Folic acid absorption is usually enhanced during a rapid weight loss.