A. Vitamin B12 deficiency
B. Ascorbic acid deficiency
C. Infection
D. B & C option
Correct Answer: B & C option ✔
Last Updated: February 07, 2020
A. Vitamin B12 deficiency
B. Ascorbic acid deficiency
C. Infection
D. B & C option
Correct Answer: B & C option ✔
Last Updated: February 07, 2020