Carbomethylchitosan is modified form of chitin which is

Options

A. Non-toxic
B. Soluble and biodegradable
C. Both A and B
D. Extremely toxic and non-biodegradable.

Answer

To answer the question regarding carbomethylchitosan, we will analyze the properties of this modified form of chitin based on the information provided.

### Step-by-Step Solution:

1. **Understanding Carbomethylchitosan**:
- Carbomethylchitosan is a derivative of chitin, which is a natural polymer found in the exoskeletons of crustaceans and insects.

2. **Analyzing the Options**:
- The options provided are:
- A) Non-toxic
- B) Soluble
- C) Biodegradable
- D) Extremely toxic and non-biodegradable

3. **Evaluating the Properties**:
- According to the video transcript, carbomethylchitosan is described as:
- **Non-toxic**: It is safe for use in medicinal applications.
- **Soluble**: It can dissolve in certain solvents, making it useful for drug delivery systems.
- **Biodegradable**: It can be broken down by biological processes, making it environmentally friendly.

4. **Conclusion**:
- Since carbomethylchitosan is confirmed to be non-toxic, soluble, and biodegradable, the correct answer is both A and B.

### Final Answer:
The correct option is **both A and B** (non-toxic and soluble, and biodegradable).

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