The Difference Between the Project Gutenberg (PG)and the Google Book

Multiple Choice

The difference between the Project Gutenberg (PG) and the Google book scanning project is:

A) The PG limits itself to the "classics"
B) The PG limits itself to only works in the public domain
C) Google only digitizes full documents but the PG digitizes key segments
D) The PG limits itself to "orphan" works - those with hard-to-find authors or owners.