Read the following context and choose the best option to answer the question.
Context: I finished PROBLEM OF THE CENTURY : RACIAL STRATIFICATION IN THE UNITED STATES today on my walk to work . It was the final book I had checked out for my Race / Ethnicity class , but I had n't needed it for the coursework . I decided to read it anyways before returning it , and to be honest , it was difficult to stay focused and read it thoroughly . The difficulty was n't motivation ( or at least not primarily ) .
Question: What subject does the narrator like to study ?
Options: 
A. The stratification of men and women .
B. Black vs. White .
C. Racial issues in education .
D. None of the above choices .


B