Which one is incorrectly matched

Options

A. (a) Vitamin C- scurvy
B. (b) Vitamin `B_(3)`- pellagra
C. (c) Vitamin `B_(12)`- Pernicious anaemia
D. (d) Vitamin `B_(6)`- Beri-beri

Answer

To determine which vitamin and deficiency disease pairing is incorrectly matched, we will analyze each option provided in the question.

### Step-by-step Solution:

1. **Analyze Option A: Vitamin C and Scurvy**
- Vitamin C, also known as ascorbic acid, is essential for various bodily functions.
- Its deficiency leads to scurvy, which is characterized by symptoms such as weakness, anemia, and thinning of the legs.
- **Conclusion**: This is a correct match.

2. **Analyze Option B: Vitamin B3 and Pellagra**
- Vitamin B3 is also known as niacin.
- A deficiency in niacin results in pellagra, which is associated with symptoms like dermatitis, diarrhea, and dementia.
- **Conclusion**: This is a correct match.

3. **Analyze Option C: Vitamin B12 and Pernicious Anemia**
- Vitamin B12 is crucial for the production of red blood cells.
- Its deficiency leads to pernicious anemia, characterized by the production of abnormally large red blood cells and a reduced number of RBCs.
- **Conclusion**: This is a correct match.

4. **Analyze Option D: Vitamin B6 and Beriberi**
- Vitamin B6 is important for protein metabolism and cognitive development.
- However, its deficiency does not cause beriberi. Beriberi is actually caused by a deficiency of Vitamin B1 (thiamine).
- Instead, Vitamin B6 deficiency can lead to symptoms like depression and anxiety.
- **Conclusion**: This is an incorrect match.

### Final Answer:
- The incorrectly matched pair is **Option D: Vitamin B6 and Beriberi**.