Context: Colin is deciding whether to go as a vampire or a superhero to a costume party. He would rather go as a vampire. But he already has a superhero costume.
Suppose Colin decides to go as a superhero. Which result would be a cost?
A. Colin will save some time and money. He won't have to go out and get a new costume.
B. Colin will give up the chance to wear the costume he is more excited about.
Pick the correct answer from the listed options and provide the letter of the selected option.

B