How Does the Text Answer This Question: Why Is Generalization

How does the text answer this question: Why is generalization, in terms of sociological research, so tricky?

A) Sociologists do not want to limit their conclusions to what they study directly; they also want their conclusions to be reliable and valid if applied more generally.
B) Loose generalizations rarely capture the attention of scientists in other fields of study.
C) Conclusions that are too generalizable risk being sanctioned by the American Sociological Association.
D) When conclusions are not sufficiently generalizable, other sociologists cannot validate them.