Two statements are given, followed by two conclusions numbered I and II. 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 Pens.
All Pens are Pencils.

Conclusions:
I. All Books are Pencils.
II. All Pencils are Books.

Only conclusion I follows.