Suppose That You Are Conducting Online Research on Injuries Among

Suppose that you are conducting online research on injuries among professional football players. You are interested in U.S. football players, but your results have included many athletes who play the sport known as soccer in the United States, as it is called football in many other parts of the world. Which of the following sets of search terms should provide you with the most relevant set of results?

A) (professional football) AND (United States) AND (injuries)
B) "professional football injuries" BUT NOT soccer
C) professional football injuries United States NOT soccer
D) (football AND professional AND injuries AND "United States") NOT soccer