Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:

All Aeroplanes are trains

Some trains are Bus

Conclusions:-

I        Some aeroplane are Bus

II       Some Bus are aeroplane

III      Some Bus are trains

IV      Some trains are aeroplane

only Conclusions III and IV follows