Lester owns a candy equipment store that produces, among other things, chocolate fountains. He currently has 5 employees; with 5 employees, his candy equipment store can produce 8 chocolate fountains per day. If he hired a sixth employee, he'd be able to produce 9 chocolate fountains per day. Therefore, the marginal product of the sixth employee is ________ chocolate fountain(s). 1) choose the one you think is correct, 2) explain why this is correct or choose one incorrect option and explain why that option is incorrect (use theories you learned from the course to explain, give proper calculation if needed) A. 5 B. 2 C. 9 D. 1