Read this line from Chapter 1: "That should make me feel like a million bucks when I flunk." Based on the sentence, what does the phrase million bucks mean?

A.It is a descriptive way to boost someone's ego.
B.It is a figurative way of describing a great feeling. 
C.It is a literal way to describe how expensive something is. 
D.It is a sarcastic way to create anger in someone.