Assertion `:` Haemoglobin is an oxygen carrier.
Reason `:` Oxygen binds as `O_(2)` to `Fe` of haemoglobin.

Options

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

Explanation

To solve the question regarding the assertion and reason about hemoglobin, we will break down the information provided in the assertion and reason statements.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Hemoglobin is an oxygen carrier." This is true because hemoglobin is a protein found in red blood cells that is responsible for transporting oxygen from the lungs to the tissues and organs of the body.

2. **Understanding the Reason**:
- The reason states that "Oxygen binds as O2 to Fe of hemoglobin." This is also true. Hemoglobin contains iron (Fe) in its heme groups, and oxygen (O2) binds to this iron. Each hemoglobin molecule can carry up to four molecules of oxygen because it has four heme groups.

3. **Connecting Assertion and Reason**:
- The assertion is supported by the reason. Since hemoglobin carries oxygen by binding it to the iron in its heme groups, the reason correctly explains how hemoglobin functions as an oxygen carrier.

4. **Conclusion**:
- Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the answer to the question is that both statements are true, and the reason is a correct explanation of the assertion.

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

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