While Walking Down the Street, You Are Approached by a Man

While walking down the street, you are approached by a man with a gun who demands your money. According to Schachter's two-factor theory of emotion, you are MOST likely to conclude

A) it is alright to be afraid in this situation.
B) since your heart is pounding in this dangerous situation, you must be afraid.
C) your heart is pounding because you are afraid.
D) you are afraid because your heart is pounding.