The mean finish time for a yearly amateur auto race was 186.96 minutes with a standard deviation of 0.389 minute. The winning car, driven by finished in 186.34 minutes. The previous year's race had a mean finishing time of 111.2 with a standard deviation of 0.119 minute. The winning that year, driven by Rita, finished in 110.97 minutes. Find their respective z-scores. Who had the more convincing victory? . . . Sam had a finish time with a z-score of Rita had a finish time with a z-score of (Round to two decimal places as needed.) Which driver had a more convincing victory? O A. Rita had a more convincing victory because of a higher z-score. O B. Sam a more convincing victory because of a lower z-score. O C. Rita had a more convincing victory because of a lower z-score. O D. Sam a more convincing victory because of a higher z-score