In Schachter and Singer's Experiment, Participants Who Received Epinephrine Injections

In Schachter and Singer's experiment, participants who received epinephrine injections reported euphoria in a happy situation and anger in an insulting situation. However, people who received placebos acted the same way. What conclusion, if any, do the results support?

A) A situation first evokes actions, which we interpret later as emotions.
B) Intensity of sympathetic nervous system aroused determines the strength of an emotion, but the situation determines which emotion.
C) The sympathetic and parasympathetic nervous systems combine their effects to produce emotions.
D) None of these conclusions follow from the data.