Austin Is Sitting in Class When Suddenly His Heart Begins

Austin is sitting in class when suddenly his heart begins to pound, he begins to sweat, and his hands begin to feel clammy. Next, fear and nervousness set in as he walks to the front of the class for his oral presentation. What theory of emotion best fits this situation?

A) Schachter-Singer theory
B) James-Lange theory
C) Smith-Scott theory
D) Cannon-Bard theory