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 metals are gold.
All jewellery are gold.
All gold are ornaments.

Conclusions:
I. Some ornaments are jewellery.
II. Some metals are jewellery.
III. All jewellery are ornaments.