Three Men Decided to Form a Partnership to Look for Buried

Three men decided to form a partnership to look for buried treasure. Luke and Mark had expensive equipment, experience, and expertise; but the third partner, Cyrus, had a treasure map. Cyrus had his holidays start a few days earlier than the other two, so he went ahead "to set up camp". Low and behold, before the others arrived, Cyrus found the treasure. So when they did arrive, he immediately dissolved the partnership and claimed the entire treasure for himself. Do Luke and Mark have any legal claim to the treasure?

A) Yes, the treasure was found before the partnership was dissolved.
B) Yes, because Cyrus has both possession and the upper hand.
C) No, the partnership was dissolved before the treasure was made known.
D) No, Luke and Mark's assets were not used to find the treasure.
E) Yes, they have a fiduciary duty to take their share.