Kamal places an ad in the local newspaper as follows: "$500 reward for the return of my gold ring." Mira finds the ring and returns it to Kamal, but he refuses to pay her the $500. Which of the following statements is true regarding this case? Select one: O a. As the ad was merely a solicitation of offers, there was no contract until Kamal accepted Mira's offer to find the ring. O b. Mira may not recover the money because she did not contact Kamal before she began her search. O c. As Mira did not pay Kamal to keep the offer open, he is free to revoke the offer and not pay her anything. O d. Mira accepted the ad as an offer for a unilateral contract by returning the ring and hence, Kamal is bound to pay her the $500