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 pens are plates.
All plates are trays.
Some trays are boxes.

Conclusions:
I. Some boxes are plates.
II. Some trays are pens.
III. Some boxes are pens.
IV. No tray is a plate.

Only conclusion II follows