Which sample is a summary of?

Sample A Lunsford and Ruszkiewicz state that evidence is important in argument, and that the type of evidence depends on the type of argument. Academic arguments require interpretation of evidence gained through scholarly methods, while it may be enoug for other arguments to be backed up by evidence from acknowledged general sources (56). Sample B Lunsford and Ruszkiewicz state that facts from general, reliable, well-acknowledged sources, such as The Wall Street Journal or FactCheck.org, may be fine in argument that are not academic. However, academic arguments require evidence from different kinds of sources, sources which are academic or scholarly in themselves. Academic arguments require the writer's own interpretation as well as unbiased presentation of facts, which makes those arguments different from many of those offered in the media which may focus only on individuals' viewpoints (56)