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:
All spoons are forks.
All knives are forks.
All forks are plates.

Conclusions:
I. All knives are plates.
II. All plates are spoons.
III. Some plates are knives.