Read the following context and choose the best option to answer the question.
Context: What do you call that ? I had a good mind to go back to the house and smack that arrogant idiot senseless , but I did the opposite . I marched in the direction of the hospital , muttering under my breath , my speech becoming colorful with a crescendo of curses . " Bum ! " I growled , clenching my fist .
Question: How is the narrator most likely feeling during the passage ?
Options: 
A. Arrogant
B. Senseless
C. Upset
D. Colorful


C