[A]: Black wood is obtained from Dalbergia.
[R]: Coffee is mainly produced in Kanataka in India

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

To solve the assertion-reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
The assertion states: "Black wood is obtained from Dalbergia."

- **Explanation**: Black wood is indeed a type of wood that is derived from the genus Dalbergia. Specifically, the species Dalbergia melanoxylon is known for producing black wood. This statement is true.

### Step 2: Analyze the Reason
The reason states: "Coffee is mainly produced in Karnataka in India."

- **Explanation**: Karnataka is indeed the leading coffee-producing state in India, contributing about 70% of the country’s coffee production. This statement is also true.

### Step 3: Determine the Relationship
Now, we need to determine if the reason provided is a correct explanation for the assertion.

- **Analysis**: While both statements are true, they are not related to each other. The production of coffee in Karnataka does not explain the fact that black wood is obtained from Dalbergia.

### Conclusion
Both the assertion and reason are true, but the reason is not the correct explanation of the assertion. Therefore, the correct answer is that both the assertion and reason are true, but the reason does not explain the assertion.

### Final Answer
- **Assertion**: True
- **Reason**: True
- **Conclusion**: Reason is not the correct explanation of the assertion.

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