Belchertown High School Car Dealership Question

I’m stuck on a Algebra question and need an explanation. Chuck is the owner of a car dealership. He is assessing the success  rates of his top three salespeople in order to offer one of them a  promotion. Over two months, for each attempted sale, he records whether  the salesperson made a successful sale or not. The results are shown in  the table below. Which salesperson has the highest success rate? A. Rachel B. JeffC. BillD. Jennifer