Well i had to do a few minutes of research to give me something to work off, and I found he wrote the "Gutenberg Bible" and this i considered the first or one of the first complete book written on a metal moving tile printing press. So with this answer I feel as if the correct answer of your choices u provided is-
A) A Christian Bible printed in Latin
hope this is useful for lots of people and makes your day that much better cause u passed a test. If u need more help and a question post in the comments and ill try my best to answer. -Harley