Context: Erik is deciding whether to plant tulips or a birch tree in his backyard. He wants to make his backyard more beautiful. But he also wants to leave space for doing fun things.
Suppose Erik decides to plant the tulips. Which result would be a cost?
A. He will save some space. The tulips will use up less space than the birch tree would have used up.
B. Erik will give up the chance to look at the birch tree. He thinks it would have looked more beautiful than the tulips.
Select the correct answer from the given choices and respond with the letter of the chosen option.
Answer: B