One afternoon, two men started landscaping work at Fred's house while he was at home watching TV. Fred did not ask the men to do the work and testified he did not discover what they were doing until his dog started barking as they began to mow his lawn. Fred was pleased that they were doing the landscaping work and went back to watch TV. The next day, the men gave Fred a bill for their services. Fred and the men then determined that the men had mistakenly performed landscaping services at the wrong address. Is Fred obligated to pay the men for their services?

A.Yes, because otherwise the landscapers would have wasted a full day of work

B.No, because an implied contract is unenforceable for services rendered

C.Yes, because there was an implied contract once he became aware they were performing the services