Context: Kiera is deciding whether to plant crocuses or a fir tree in her backyard. She wants to make her backyard more beautiful. But she also wants to leave space for doing fun things.
Suppose Kiera decides to plant the crocuses. Which result would be a cost?
A. She will save some space. The crocuses will use up less space than the fir tree would have used up.
B. Kiera will give up the chance to look at the fir tree. She thinks it would have looked more beautiful than the crocuses.
Identify the correct choice from the options below and respond with the letter of the correct option.
Answer: B