The Schachter-Singer Theory of Emotion says that if you are not physiologically aroused and this is just a coffee-effect, you don't have kind of label inside, the label of feeling based o what is going on around you. Therefore, you might feel sad when something in the environment gets wrong, so the coffeine just puts a mask on you, but not on what you feel inside.According to this, I choose this c. Your emotion would be sad since the context would affect your labeling.
