Which sentence from the article shows the author's MAIN problem when researching Kristallnacht?

A: When I started to watch interviews with German-Jewish survivors of the Holocaust, I was surprised to hear many of them talk about the destruction of their homes during Kristallnacht.

B: Yet none of these stories appeared in traditional accounts of Kristallnacht.

C: Some years later, I found a document from Schneidemühl, a small district in eastern Germany, that listed the destruction of a dozen synagogues, over 60 shops and 231 homes.

D: A fuller picture of the brutal destruction of Jewish homes and apartments soon emerged.