Q: This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
Passage: The consolidation of the "hot AC" format contrasted with the near-demise of most other AC formats: Beginning with the 2005-2007 economic downturn and eventual recession most stations went for the more chart-based CHR, along with the top 40, urban and even Latino formats. Diminishing physical record sales also proved a major blow to the AC genre. Question: Declining sales of what items harmed the adult contemporary genre?
A:
physical record