If Billy offers to give Tannish $$600$ in exchange for shaking his hand and Tannish agree and both would appear sincere to an disinterested observer, is this a valid contract?

Multiple Choice

Yes, there was a clear offer and acceptance as well as consideration.

No$,$ it's just an offer of a gift.

No$,$ it's not a contract because the consideration fails: a mere shaking of a hand is inadequate consideration for $$600.$

None of the answer choices are correct.