A patient is diagnosed with chronic atrophic gastritis attended by deficiency of Castle's intrinsic factor. What type of anemia does the patient have?

Answer options

1. B12-deficiency anemia
2. Iron-deficiency anemia
3. Hemolytic anemia
4. Protein-deficiency anemia
5. Iron refractory anemia

Explanation

The intrinsic factor of the stomach helps absorb Vitamin B-12. Its deficiency leads to B-12 deficiency anemia.