Which of the following pair is characterised by swollen lips, thick pigmented skin of hands and legs and irritability?

Q. Which of the following pair is characterised by swollen lips, thick pigmented skin of hands and legs and irritability?
A. Thiamine —- Beri-Beri
B. Protein —- Kwashiorkor
C. Nicotinamide —- Pellagra
D. Iodine —- Goitre
Answer: Nicotinamide —- Pellagra