What Is the Basic Underlying Reason Why We Tend to Make

What is the basic underlying reason why we tend to make attributional mistakes?

A) We generally do not pay enough attention to our surroundings, and thus miss essential information that would help us avoid attributional mistakes.
B) We are generally quick to assume the worst of intents in other people, so this leads us to attributional mistakes.
C) We are more concerned with getting an attribution made quickly than getting it made correctly, and this causes us to make mistakes.
D) We don't have enough information to know why a person behaved as they did, so we make rapid assumptions.