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:
No plum is an apricot.
All lemons are apricots.
All grapes are lemons.

Conclusions:
I. No apricot is a grape.
II. No grape is a plum.
III. No lemon is a plum.
IV. Some plums are lemons.