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 conclusion(s) logically follow from the statements.

Statements:

A. All sapphires are pearls.

B. Some pearls are malachites.

C. All malachites are rubies.

Conclusions:

I. Some sapphires are rubies.

II. Some malachites are pearls.

III. Some pearls are rubies.

IV. All pearls are malachites.