In the Case in the Text Where Someone Purchased a Used

In the case in the text where someone purchased a used safe at an auction for $50,but was later found by the buyers to contain more than $30,000 in cash,how did the court rule?

A) There was no contract because the buyer was unjustly enriched.
B) There was no contract because the act of opening the safe was not completed before the buyers took the safe.
C) This was an implied-in-fact contract and the buyers were required to pay the fair value for the safe and its contents.
D) There was objective intent that the parties intended that the safe,and whatever might be in it,be sold for a price of $50.