The correct option is (A):
Explanation: The first statement indicates that not all cars are trains, but it does not provide information about trains that allows us to conclude anything specific about their wheel count. Conclusion I asserts that all trains are not four-wheeled vehicles, which is a valid deduction since cars (four-wheeled vehicles) are excluded from being trains. However, conclusion II, which suggests that some trains could be four-wheeled vehicles, is not necessarily supported by the statements. Therefore, the correct answer is Option A – only conclusion I follows.