According to paragraphs 4 and 5, how did German and Italian contributions to the printing industry differ? A. German printers originated and applied a technique that Italian printers adapted more artistically B. German printers mass-produced books, while Italian printers produced fewer books of better quality C. German printers used only black typeface, while Italian printers used a variety of typeface colors and styles D. German printers had greater technological skill, while Italian printers were more commercially successful.