Select the correct statements out of the following .
(i)Both DNA and RNA are able to mutate.
(ii)RNA being unstable , mutates at a faster rate.
(iii)RNA shows catalytic properties.
(iv)Presence of uracil (U) at place of thymine (T) confers additional stability to RNA.

Options

A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iv)
D. (i),(ii) and (iii)

Explanation

To solve the question, we need to evaluate each of the statements provided and determine their correctness based on our understanding of DNA and RNA.

### Step-by-Step Solution:

1. **Statement (i): Both DNA and RNA are able to mutate.**
- **Evaluation:** This statement is correct. Both DNA and RNA can undergo mutations due to various factors such as environmental influences or intentional alterations. Mutations can occur in both types of nucleic acids.
- **Conclusion:** This statement is **true**.

2. **Statement (ii): RNA being unstable, mutates at a faster rate.**
- **Evaluation:** This statement is also correct. RNA is generally less stable than DNA because it is single-stranded and more susceptible to degradation. This instability can lead to a higher mutation rate in RNA compared to the more stable double-stranded DNA.
- **Conclusion:** This statement is **true**.

3. **Statement (iii): RNA shows catalytic properties.**
- **Evaluation:** This statement is correct as well. Certain RNA molecules, known as ribozymes, have catalytic properties and can facilitate biochemical reactions, similar to enzymes. This ability to act as a catalyst is a unique feature of some RNA molecules.
- **Conclusion:** This statement is **true**.

4. **Statement (iv): Presence of uracil (U) at place of thymine (T) confers additional stability to RNA.**
- **Evaluation:** This statement is incorrect. The presence of uracil instead of thymine in RNA actually makes RNA less stable. Thymine in DNA contributes to the stability of the double helix structure, while uracil does not provide the same level of stability in RNA.
- **Conclusion:** This statement is **false**.

### Final Conclusion:
Based on the evaluations:
- **Correct Statements:** (i), (ii), and (iii)
- **Incorrect Statement:** (iv)

Thus, the correct answer is that statements (i), (ii), and (iii) are true.