After spending nearly five hours in the library, Hernando feels like he has too many sources about performance-enhancing drugs for his Physiology paper. What can he do to narrow down his list of sources for his annotated bibliography?

A. Write about only those sources that are from library databases.
B. Consider which sources are most applicable to his research question.
C. Summarize each source and write a detailed analysis as to why or why not it should be included in the paper.
D. Write about the first five sources he found so he can include both good and bad examples in the annotated bibliography.