Assertion (A): Gold is used for making jewellery coins.
Reason (R): It is relatively a hard metal.

Options

A. Both (A) and (R) are true and (R) is the correct reason of (A).
B. Both (A) and (R) are true but (R) is not the correct explanation of (A).
C. (A) is true but (R) is false.
D. (A) is false but (R) is true.

Explanation

**Step-by-Step Solution:**

1. **Identify the Assertion (A)**: The assertion states that "Gold is used for making jewellery coins."
- **Evaluation**: This statement is true. Gold is indeed widely used in making jewelry and coins due to its desirable properties.

2. **Identify the Reason (R)**: The reason states that "It is relatively a hard metal."
- **Evaluation**: This statement is false. Gold is actually a soft metal, which means it is not hard. It is malleable and ductile, allowing it to be shaped into various forms for jewelry.

3. **Determine the Relationship**: We need to check if the reason correctly explains the assertion.
- Since the assertion is true but the reason is false, the reason does not support the assertion.

4. **Conclusion**: Based on the evaluations:
- Assertion (A) is true.
- Reason (R) is false.
- Therefore, the correct option is that the assertion is true, but the reason is false.

**Final Answer**: Assertion is true, but reason is false (Option 3).

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