Read the following statements carefully and select the correct ones.
Cardiac fibre are branched with one or more nuclei.
(ii) Smooth muscles are unbranched and cylinedrical.
(iii) Skeletal muscle can be branched or unbranched.
(iv) Smooth muscle are non-striated.

Options

A. Only (IV)
B. (ii) and (iii)
C. (iii) and (iv)
D. only (iii)

Explanation

To determine the correct statements about muscle fibers, we will analyze each statement one by one based on our understanding of the three types of muscle tissue: cardiac, smooth, and skeletal muscles.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement (i)**: "Cardiac fibers are branched with one or more nuclei."
- **Analysis**: Cardiac muscle fibers are indeed branched and typically contain one or two nuclei. However, they are interconnected through intercalated discs, allowing them to function as a syncytium. This statement is partially correct but could be misleading as it implies a single continuous cell.
- **Conclusion**: This statement is **correct** in terms of branching and nuclei presence.

2. **Statement (ii)**: "Smooth muscles are unbranched and cylindrical."
- **Analysis**: Smooth muscle fibers are not cylindrical; they are actually tapered at both ends, giving them a fusiform shape. Therefore, this statement is incorrect.
- **Conclusion**: This statement is **incorrect**.

3. **Statement (iii)**: "Skeletal muscle can be branched or unbranched."
- **Analysis**: Skeletal muscles are typically unbranched and are organized in parallel bundles. They do not exhibit branching like cardiac muscles. Thus, this statement is incorrect.
- **Conclusion**: This statement is **incorrect**.

4. **Statement (iv)**: "Smooth muscles are non-striated."
- **Analysis**: Smooth muscles do not show striations (the alternating light and dark bands) that are characteristic of skeletal and cardiac muscles. This statement is correct.
- **Conclusion**: This statement is **correct**.

### Final Conclusion:
Based on the analysis:
- Correct statements: (i) and (iv)
- Incorrect statements: (ii) and (iii)

Thus, the correct answer is that statements (i) and (iv) are correct.