2) 60 because it's the one that appear the most
I feel like there is something missing from this question, for example how large is the tree house? If these are just plain measurements, then I would opt for B.
FOLLOW ME FOR CLEARING YOUR NEXT DOUBT
I'm 100% sure the answer is d. II and IV
because $257.72 - $248.53 = $9.19
and $73.98 - $64.79 - 9.19
i hope this helps :)