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:

I. Some ornaments are diamonds.

II. Some diamonds are necklaces.

III. All necklaces are rings.

Conclusions:

I. Some rings are diamonds.

II. Some rings are necklaces.

III. No ring is diamond.

Conclusions I and II follow