A Robbery of a Convenience Store Is Reported to the Police.Thirty

A robbery of a convenience store is reported to the police.Thirty minutes later,Roger,a police officer,observes Jack Jackson walking rapidly down the sidewalk.Jack meets the description of the robber.As Roger turns his police car in Jack's direction,Jack steps into an alleyway hoping to avoid being seen.Roger exits his police car and intercepts Jack on foot.He detains Jack in order to determine if Jack is the robber.Jack,however,is not in fact the robber but believes a misdemeanor traffic warrant for his arrest may be outstanding.So,when Roger asks Jack his name,Jack replies,"William Wilson." At that moment,Reuben,Jack's brother,walks up and says,"Jack.Why have the cops stopped you?" At this point Roger realizes that Jack has given him a fictitious name.Subsequent investigation reveals Jack's true name and that he is not the robber.Under these facts,Jack has committed:

A) no offense.
B) interference with public duties.
C) failure to identify.
D) perjury.