Allen Is Running Late for His Social Psychology Class

Allen is running late for his social psychology class.He is hurrying across campus and is thinking about the instructor's reaction to his tardiness on an exam day.He passed by a small group of students clustered around someone who is lying on the ground,clutching his chest and gasping for breath.Allen did not stop to help because he simply was not aware of what was happening at the time.This failure to engage in prosocial behavior was probably due to .

A) Allen's assumption that other bystanders would help
B) Allen's not paying attention to the situation
C) Allen's lack of training in emergency medical procedures
D) Allen's desire to remain uninvolved with others' problems
E) Allen's incorrectly interpreting the situation