Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
Some tractors are boats.
All cups are boats.
All jars are tractors.
Conclusions:
I. Some tractors are cups.
II. No jar is boat.
III. Some cups are jars.

From the given statements, the basic diagram is

I.Some tractors are cups

From the basic diagram, No tractor is cup. Hence Conclusion I do not follow.

II. No jar is boat

From the above possibility diagram, Some jars are boats. Hence Conclusion II do not follow.

III. Some cups are jars

From the basic diagram, No cup is a jar. Hence Conclusion III do not follow.

$$\therefore\ $$None of the conclusion follows

Hence, the correct answer is Option B