Read the given statements and conclusions carefully. Assuming that the information given in the statements is true even if it seems to be at variance from commonly known facts, decide which of the given conclusions logically follows from the given statements.

Statement:

Some cars are vans.

All vans are scooters.

All cars are buses.

Conclusion:

I. Some buses are scooters.

II. Some scooters are cars.

III. Some buses are vans.