TOEFL Reading: ETS-TOEFL阅读机经 - L19V89DN3Z7K318LL$

Which of the following is mentioned in paragraph 6 as a method for verifying accuracy of an account of a past event? A. Comparing accounts of the event given by different writers B. Investigating whether a particular author's accounts of other events have proved accurate C. Investigating whether the author of an account actually presented as the event described. D. Determining whether the author of an account was able to crosscheck information with multiple informants