6 ut of Marilee and her sister Susan go out for dinner and drinks. They have a great evening, laughing and talking. Late in the evening, Marilee and Susan agree to go into business together: Marilee will pay Susan $10,000 to develop an app, which Marilee will then put her time and effort into promoting. A few days later, when the sisters talk about it in the sober light of day, neither of them take the idea seriously What element of contract formation was missing? Select one a. Consideration b. Intent c. Offer a O d. Legality e. Acceptance