Pernicious anaemia is caused by the deficiency of vitamin _____.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. B12.
- The most common cause of vitamin B-12 deficiency anaemia is a lack of a substance called intrinsic factor, which can be caused when your immune system mistakenly attacks the stomach cells that produce this substance.
- This type of anaemia is called pernicious anaemia.