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.

The basic diagram for the given statements is

I. Some plastic is steel

From the basic diagram, no plastic is steel. Hence conclusion I do not follow.

II. Some iron is steel

From the basic diagram, some iron is steel. Hence conclusion II follows.

III. No steel is plastic

From the basic diagram, no steel is plastic. Hence conclusion III follows.

$$\therefore\ $$Only conclusions II and III follow the given statements.

Hence, the correct answer is Option B