Write a 1–2-page paper that answers the following questions:* What are the four elements of a valid contract?* What is the objective theory of contracts?* How does the objective theory of contracts apply to this case?* In your own words, why do you think the court held that there was not a valid agreement here?* Are advertisements generally considered offers? Explain.* How does this case differ from a reward situation in which a unilateral contract is formed upon completion of the requested act?