How Did Hochschild Do Research for Her Essay, "No Country

How did Hochschild do research for her essay, "No Country for White Men"?

A) She lives in the neighborhood about which she wrote.
B) Decades of social surveys provided the data she analyzed and from which she drew conclusions.
C) She made many trips over a five-year period to an area where she got to know the people, spent time interacting with them, and got to know their surrounding environment.
D) As a film reviewer, she has watched thousands of movies and been part of the Hollywood scene all of her adult life.