The retention rate represents A B D the number of new customers gained during a time period as a percentage of total customers before that time period the percentage of customers who remain with a company out of the total number of customers who had the opportunity to leave the company the percentage of customers who redeemed a coupon during a particular time period the percentage of customers that switched to another provider during a particular time period E the percentage of customers who remain in relationship to the number of new customers gained in the same time period