I want to know the answer to the following question:
How many commanly cited estimates did the body report on?
All the background I'm provided with is that "The U.S. GAO's 2010 findings regarding the great difficulty of accurately gauging the economic impact of copyright infringement was reinforced within the same report by the body's research into three commonly cited estimates that had previously been provided to U.S. agencies.". Is that enough to answer the question?