A: true vocal cord are located above the false vocal cords and participate in sound production.
B: false vocal cord are located above the true vocal cords do not participate in sound production.
1) both [A] & [B] are correct
2) only [A] is correct
3) Only [B] is correct
4) both [A] & [B] are incorrect

Options

A. both [A] & [B] are correct
B. only [A] is correct
C. Only [B] is correct
D. both [A] & [B] are incorrect

Answer

To solve the question, we need to evaluate the two statements regarding the true and false vocal cords.

### Step-by-Step Solution:

1. **Understanding the Anatomy of Vocal Cords**:
- The human larynx contains two pairs of vocal cords: the true vocal cords and the false vocal cords (also known as vestibular folds).
- The false vocal cords are located above the true vocal cords.

2. **Evaluating Statement A**:
- Statement A claims: "True vocal cords are located above the false vocal cords and participate in sound production."
- This statement is incorrect because the true vocal cords are actually located below the false vocal cords, not above. However, it is true that the true vocal cords participate in sound production.

3. **Evaluating Statement B**:
- Statement B claims: "False vocal cords are located above the true vocal cords and do not participate in sound production."
- This statement is correct because the false vocal cords are indeed located above the true vocal cords, and they do not participate in sound production.

4. **Conclusion**:
- Since Statement A is incorrect and Statement B is correct, the correct answer is option 3: "Only [B] is correct."

### Final Answer:
**3) Only [B] is correct**