Choose correct set of statements about multivalent antigens
i) it has different epitopes ii) it has repeats of same epitopes iii)it binds to different paratopes iv) its epitopes bind to same type of antibodies.

Options

A. i, ii
B. i, ii, iii
C. i, iv
D. ii, iv

Answer

To solve the question regarding the correct set of statements about multivalent antigens, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Understanding Multivalent Antigens**:
- Multivalent antigens are molecules that have multiple epitopes. Epitopes are the specific parts of an antigen that antibodies recognize and bind to.

2. **Evaluating Statement i**:
- **Statement i**: "It has different epitopes."
- This statement is **correct** because multivalent antigens can indeed have different types of epitopes.

3. **Evaluating Statement ii**:
- **Statement ii**: "It has repeats of the same epitopes."
- This statement is also **correct**. Multivalent antigens can have multiple copies of the same epitope, allowing them to bind more effectively to antibodies.

4. **Evaluating Statement iii**:
- **Statement iii**: "It binds to different paratopes."
- This statement is **correct** as well. Different antibodies can have different paratopes (the part of the antibody that binds to the epitope), allowing multivalent antigens to bind to various antibodies.

5. **Evaluating Statement iv**:
- **Statement iv**: "Its epitopes bind to the same type of antibodies."
- This statement is **incorrect**. While a specific epitope may bind to a specific antibody, multivalent antigens can have different epitopes that may bind to different types of antibodies.

### Conclusion:
After evaluating all the statements, the correct set of statements about multivalent antigens is:
- i) It has different epitopes - **Correct**
- ii) It has repeats of the same epitopes - **Correct**
- iii) It binds to different paratopes - **Correct**
- iv) Its epitopes bind to the same type of antibodies - **Incorrect**

Thus, the correct answer includes statements i, ii, and iii.