Context: Celine is deciding whether to plant lilies or an oak tree in her backyard. She wants to make her backyard more beautiful. But she also wants to leave space for doing fun things.
Suppose Celine decides to plant the lilies. Which result would be a cost?
A. She will save some space. The lilies will use up less space than the oak tree would have used up.
B. Celine will give up the chance to look at the oak tree. She thinks it would have looked more beautiful than the lilies.
Select the correct answer from the provided options and reply with the letter associated with it.

B