Match Each of the Following Procedures of Historical Research with the Most

Match each of the following procedures of historical research with the most appropriate example of that procedure.
-External criticism of a historical document

A) Collecting evidence to determine whether a historical source is a forgery
B) Judging whether the writer was competent to report on the events described in the source
C) Examining newly discovered historical documents to determine whether they reinforce existing interpretations of events
D) Writing a history of World War II that makes no mention of the Holocaust