Bryan Finds His Girlfriend Christina Far More Attractive as She

Bryan finds his girlfriend Christina far more attractive as she leaves the darkened movie theater than before they entered.What might account for Bryan's reaction?

A) Research suggests that attractiveness is affected by eye color.
B) Research suggests that the lighting in theaters affects our visual perception.
C) Research suggests that most people find enlarged pupils more attractive.
D) Research suggests that perceived attractiveness increases as the pupil becomes smaller.