e
How does the author's discussion of the 2014-2015 flu season relate to other ideas in the passage?
OA. It demonstrates that there is a need to produce more doses of seasonal flu vaccines.
OB. It explains that scientists from around the world monitor flu strains.
OC. It establishes that there is a need to develop a better strategy to predict flu strains.
OD. It describes how flu vaccines are currently developed and evaluated.