A trade magazine routinely checks the drive-through service times of fast-food restaurants. An 80% confidence interval that results from examining 683 customers in one fast-food chain's drive-through has a lower bound of 171.5 seconds and an upper bound of 175.1 seconds. What does this mean? Choose the correct answer below. OA. One can be OB. There is a seconds and % confident that the mean drive-through service time of this fast-food chain is seconds. OC. One can be seconds and % probability that the mean drive-through service time of this fast-food chain is between seconds. % confident that the mean drive-through service time of this fast-food chain is between seconds. D. The mean drive-through service time of this fast-food chain is seconds % of the time.