Why Are Perceptions of National Character Sometimes More Accurate Than

Why are perceptions of national character sometimes more accurate than self-reports from members of that culture?

A) Perceptions of national character are based on a broader cultural viewpoint than are self-reports.
B) National character doesn't change over time.
C) National character is usually well established and agreed on, whereas self-reports lack reliability.
D) Perceptions of national character are collected by combining many individual self-reports.