Assertion : Some electric appliance have three pins, even though if we remove the top pin, it will continue working.
Reason: The third pin is used only as a safety device.

Options

A. If both assertion and reason are true and reason is the correct explantion of assertion.
B. If both assertion and reason are true and reason is not the correct explantion of assertion.
C. If assertion is false but reason is true
D. If assertion is true but reason is false.

Answer

To solve the question, we need to analyze the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that some electric appliances have three pins, and even if we remove the top pin, they will continue to work.
- In a typical three-pin plug, there are two smaller pins (live and neutral) and one larger pin (earth). The assertion is correct because the live and neutral pins are sufficient for the appliance to function.

**Hint**: Identify the function of each pin in a three-pin plug.

2. **Understanding the Reason**:
- The reason given is that the third pin (the earth pin) is used only as a safety device.
- This is true. The earth pin is designed to prevent electric shock by providing a path for excess current to flow safely into the ground in case of a fault.

**Hint**: Consider the role of the earth pin in protecting users from electrical hazards.

3. **Linking Assertion and Reason**:
- Both the assertion and the reason are true. The assertion correctly states that the appliance will still work without the earth pin, and the reason accurately describes the purpose of the earth pin as a safety device.
- Therefore, the assertion is true, and the reason is also true, and the reason explains the assertion.

**Hint**: Evaluate how the reason supports the assertion by explaining the role of the earth pin.

### Conclusion:
- Both the assertion and the reason are true, and the reason correctly explains the assertion.

### Final Answer:
- The assertion is true, and the reason is true, and the reason is a correct explanation of the assertion.