Hannah,as a Joke,offers to Sell Her Violin to Mike

Hannah,as a joke,offers to sell her violin to Mike.Her statement would have legal effect if:

A) the intended jest is so successful that Mike as a reasonable person under the circumstances believes the joke is an offer and he accepts.
B) Hannah's intent,determined subjectively,is to enter a contract.
C) Hannah's intent,determined objectively,is not to enter a contract.
D) Mike did not,but should have realized that Hannah was not serious.