Vitamin `B_(12)` is rich in

Options

A. Sewage sludge
B. Liver of pig
C. Egg
D. all

Answer

To determine where Vitamin B12 is rich, we can analyze the given options step by step.

### Step 1: Understanding Vitamin B12
Vitamin B12, also known as cobalamin, is a water-soluble vitamin that is part of the B complex vitamins. It is essential for the formation of red blood cells and the maintenance of the nervous system.

### Step 2: Evaluating the Options
We have four options to consider:
1. C-waste sludge
2. Liver of pig
3. Egg
4. All of the above

### Step 3: Analyzing Each Option
- **C-waste sludge**: This is a byproduct of wastewater treatment and can contain various nutrients, including some vitamins. It is known to have a significant amount of Vitamin B12.

- **Liver of pig**: The liver is a well-known source of Vitamin B12. It is one of the richest sources of this vitamin, making it a primary dietary source for many people.

- **Egg**: Eggs also contain Vitamin B12, although in smaller amounts compared to liver. They are still considered a good source of this vitamin.

### Step 4: Conclusion
Since Vitamin B12 is found in all three options (C-waste sludge, liver of pig, and egg), the correct answer is:
**All of the above (Option 4)**.

### Final Answer
Vitamin B12 is rich in: **All of the above** (C-waste sludge, liver of pig, and egg).

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