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 pots are boxes.
All stands are boxes.
Some cartons are stands.

Conclusions:
I. Some cartons are boxes.
II. Some cartons are pots.
III. Some pots are stands.