Adul's Instructor Dresses Rather Casually and Shows Up to Class

Adul's instructor dresses rather casually and shows up to class with messy hair and glasses that have been taped together. Adul spends most of class playing on his phone because he assumes the instructor is as unintelligent and unprepared as he is unattractive. This example demonstrates _______.

A) the halo effect
B) physical attraction
C) the horns effect
D) social attractiveness