Which One of the Following Is the BEST Example of the Ecological

Which one of the following is the BEST example of the ecological fallacy?

A) Catherina studied the ecology of social interaction in her dorm, but focused only on individuals.
B) Felisha studied Census tracts for her study on crime, but then wrote up her conclusions in terms of individuals.
C) Sean did not actually study the same individuals in his longitudinal study of worker alienation, but called his study a panel study.
D) Jack mistakenly called his unit of analysis organizations, but it was really social artifacts in his study of humor.
E) Mary applied the reasons for why her cousin, Jane, failed her driving test to all persons who failed their driving tests.