Context: Eli is deciding whether to see the tamarins or the polar bears at the zoo. He wants to see lots of animals, but the zoo is closing soon.
Suppose Eli decides to see the polar bears. Which result would be a cost?
A. Eli will save some time. The polar bears are close by, but he would have had to walk to the the other side of the zoo to see the tamarins.
B. Eli will give up the chance to see the tamarins. He would have enjoyed seeing them more than the polar bears.
Pick the correct answer from the listed options and provide the letter of the selected option.
Answer: B