Shannon's Class Presentation Is Better-Performed Than the Same Speech She

Shannon's class presentation is better-performed than the same speech she practiced alone at home the previous evening. Tracy's class presentation, though, is worse than the same speech she practiced alone. What might you conclude on the basis of this information

A) Shannon had learned her presentation better than Tracy had learned hers.
B) Tracy had learned her presentation better than Shannon had learned hers.
C) Shannon's arousal level in the classroom was higher than Tracy's.
D) Tracy's arousal level in the classroom was higher than Shannon's.