The mean finish time for a yearly amateur auto race was 185.68 minutes with a standard deviation of 0.334 minute. The winning car, driven by Ron, finished in 185.25 minutes. The previous year's race had a mean finishing time of 111.5 with a standard deviation of 0.127 minute. The winning car that year, driven by Amber, finished in 111.21 minutes. Find their respective z-scores. Who had the more convincing victory? . . . Ron had a finish time with a z-score of Amber had a finish time with a z-score of (Round to two decimal places as needed.) the Which driver had a more convincing victory? ke O A. Ron a more convincing victory because of a lower z-score. O B. Ron a more convincing victory because of a higher z-score. O C. Amber had a more convincing victory because of a lower z-score. O D. Amber had a more convincing victory because of a higher z-score