A trade magazine routinely checks the drive-through service times of fast-food restaurants. Upper A A 90 90% confidence interval that results from examining 691 691 customers in one fast-food chain's drive-through has a lower bound of 161.9 161.9 seconds and an upper bound of 165.5 165.5 seconds. What does this mean? Choose the correct answer below. A. One can be 90 90% confident that the mean drive-through service time of this fast-food chain is between 161.9 161.9 seconds and 165.5 165.5 seconds. B. One can be 90 90% confident that the mean drive-through service time of this fast-food chain is 163.7 163.7 seconds. C. There is a a 90 90% probability that the mean drive-through service time of this fast-food chain is between 161.9 161.9 seconds and 165.5 165.5 seconds. D. The mean drive-through service time of this fast-food chain is 163.7 163.7 seconds 90 90% of the time.