Four Psychology Students, Who Have All Attended Equal Numbers of Classes

Four psychology students, who have all attended equal numbers of classes and studied the same amount of time, are all about to take their final exam. According to the Yerkes-Dodson law, which student would perform the best?

A) Chloe, who doesn't really care about the test and is not worried about her grade.
B) Ryan, who is relatively calm, cool, and collected and not nervous about the test.
C) Sampson, who is confident about the test but still a bit nervous about it.
D) Megan, who has very high test-anxiety.