Mark the correct statement(s) among the following.
I. Water is a very good fire extinguisher as it cools down the fuels such as wood below its ignition temperature.
II Water is a very good fire extinguisher for burning oils and electrical equipments.
III. Sand and soil may act as good fire extinguishers for burning oils.

Options

A. I only
B. II only
C. III only
D. I and III only

Explanation

To determine which statements are correct regarding fire extinguishers, let's analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement I: Water is a very good fire extinguisher as it cools down the fuels such as wood below its ignition temperature.**
- **Analysis:** This statement is correct. Water can effectively cool down materials like wood and paper, lowering their temperature below the ignition point, which prevents combustion. Thus, water is indeed a good fire extinguisher for such materials.

2. **Statement II: Water is a very good fire extinguisher for burning oils and electrical equipment.**
- **Analysis:** This statement is incorrect. Water is not suitable for extinguishing fires involving oils or electrical equipment. Water can conduct electricity and may cause electric shocks if used on electrical fires. Additionally, water can spread oil fires, making them worse.

3. **Statement III: Sand and soil may act as good fire extinguishers for burning oils.**
- **Analysis:** This statement is correct. Sand and soil can be used to smother oil fires. By covering the burning oil, they cut off the oxygen supply, which is necessary for combustion, thus extinguishing the fire.

### Conclusion:
- The correct statements are **I and III**. Therefore, the answer is that statements I and III are correct.

### Final Answer:
**Correct Statements:** I and III.

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