Statement I: If time period of a satellite revolving in circular orbit in equatorial plane is `24 h`, then it must be a, geostationary satellite.
Statement II: Time period of a geostationary satellite is `24 h`.

Options

A. Statement I is True, Statement II is True: Statement II is a correct explanation for Statement I.
B. Statement I is True, Statement II is True: Statement II is Not a correct explanation for Statement I.
C. Statement I is True, Statement II is False.
D. Statement I is False, Statement II is True.

Explanation

To determine whether the statements about geostationary satellites are true or false, we need to analyze each statement based on the conditions required for a satellite to be classified as geostationary.

### Step-by-Step Solution:

1. **Understanding Geostationary Satellites**:
A geostationary satellite is one that remains in a fixed position relative to the Earth's surface. For a satellite to be classified as geostationary, it must meet three specific conditions:
- The satellite must orbit in the equatorial plane.
- The satellite must have a time period of 24 hours.
- The satellite must rotate in the same direction as the Earth rotates on its axis.

2. **Analyzing Statement I**:
The first statement claims that if a satellite has a time period of 24 hours, it must be a geostationary satellite.
- While it is true that a geostationary satellite has a time period of 24 hours, the reverse is not necessarily true. A satellite can have a time period of 24 hours but may not be in the equatorial plane or may not have the same sense of rotation as the Earth. Therefore, this statement is **false**.

3. **Analyzing Statement II**:
The second statement asserts that the time period of a geostationary satellite is 24 hours.
- This statement is true because by definition, a geostationary satellite orbits the Earth once every 24 hours, matching the Earth's rotation period. Thus, this statement is **true**.

4. **Conclusion**:
Based on the analysis:
- Statement I is **false**.
- Statement II is **true**.

Thus, the correct answer is that Statement I is false and Statement II is true.

### Final Answer:
- Statement I: False
- Statement II: True