Arnold Is Not a Cheerleader and Doesn't Know Any Cheerleaders

Arnold is not a cheerleader and doesn't know any cheerleaders personally, but when he sees them at the football games, they are always smiling. Arnold is likely to

A) think about specific cheerleaders rather than the group stereotype.
B) notice the ways in which each cheerleader is unique.
C) be able to distinguish cheerleaders from one another only if they are smiling.
D) think that all cheerleaders are happy.