Further evidence bearing on Jamison’s activities must have come to light. On the basis of previously available evidence alone, it would have been impossible to prove that Jamison was a party to the fraud, and Jamison’s active involvement in the fraud has now been definitively established.
The pattern of reasoning exhibited in the argument above most closely parallels that exhibited in which one of the following

A．Smith must not have purchased his house within the last year. He is listed as the owner of that house on the old list of property owners, and anyone on the old list could not have purchased his or her property within the last year.

B．Turner must not have taken her usual train to Nantes today. Had she done so, she could not have been in Nantes until this afternoon, but she was seen having coffee in Nantes at 11 o’clock this morning.

C．Norris must have lied when she said that she had not authorized the investigation. There is no doubt that she did authorize it, and authorizing an investigation is not something anyone is likely to have forgotten.

D．Waugh must have known that last night’s class was canceled. Waugh was in the library yesterday, and it would have been impossible for anyone in the library not to have seen the cancellation notices.

E．(E) LaFort must have deeply resented being passed over for promotion. He maintains otherwise, but only someone who felt badly treated would have made the kind of remark. LaFort made at yesterday’s meeting.