Jiah Jo owns an original Heart Touch Lamp. Being in need of money, he sold the lamp to Minkyu Kim for $1,000. After the sale, Jiah Jo discovered that the lamp was valuable and was worth P5,000. a. Jiah Jo may rescind the contract on the ground of lesion or inadequacy of cause. b. Jiah Jo may annul the contract on grounds of fraud. c. Jiah Jo may annul the contract on ground of error. d. Minkyu Kim is entitled to the benefit of the contract because it is valid and binding