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 plastic is iron.

All steel is iron.

Conclusions:

I. Some plastic is steel.

II. Some iron is steel.

III. No steel is plastic.

Only conclusions II and III follow.