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:
All books are copies.
No copy is a pen.
Some erasers are books.

Conclusions:
I. Some copies are erasers.
II. Some pens are books.
III. No eraser is a pen