Jennifer is interested in finding out more about incunabula. which statement is an accurate fact about incunabula? a. the three types of incunabula are photographic, xylographic, and typographic. b. the two types of incunabula are xylographic, and typographic. c. an incunabulum is a book, single sheet, or image that was printed after the year 1800. d. incunabula were the earliest books, copied entirely by hand.