What does the woman imply when she says this: A. It is unfortunate that people in the 19th century destroyed old stained-glass windows. B. Stained-glass windows made in the 19th century are more beautiful than those made earlier. C. It was necessary for people in the 19th century to break stained-glass windows. D. Stained-glass windows made in the 19th century are more valuable today than windows in previous centuries.