In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

The identity of the only suspect in the prison attack which left the notorious 'Son of Sam' killer David Berkowitz with a slashed throat has finally been revealed. William E. Hauser, a 63-year-old currently serving time for beating a man to death with a rolling pin, has been identified as the likely culprit behind the attack. Hauser's identity was revealed by former Attica superintendent James Conway, who at the time worked as a corrections officer at the infamous facility. Conway told the New York Post that Hauser - who at that time was behind bars following a first-degree assault conviction - had been moved to the same special housing unit as Berkowitz after witnessing a murder in the prison yard.William E. Hauser, 63, has been identified as the only suspect in the 1979 attack that left the 'Son of Sam' killer David Berkowitz with a slashed throatFormer Attica superintendent James Conway was a corrections officer at the time and  said Berkowitz had his throat slashed outside Hauser's cellBerkowitz had been distributing water to other prisoners at the time, and guards had seen Hauser receive something in the yard a few days earlierConway believes Hauser had been given a razor which he flushed down the toilet after the attackBerkowitz, who is serving six life sentences for his 1976-77 killing spree in New York City, was too afraid to cooperate with the investigationHauser, who at the time was in prison for assault, is now behind bars for beating a man to death with a rolling pin 
 Questions:In the years since some have questioned whether _ was in fact responsible for all the killings, and the case was briefly reopened in 1996. (A) Son of Sam (B) David Berkowitz (C) William E. Hauser (D) Hauser (E) Attica (F) James Conway (G) Conway (H) New York Post (I) New York City
(B)