I need help with this question

Quiz: Quiz Ch3 Numerically Summarizing Data Submit Quiz This Question: 1 pt 10 of 15 (8 complete) This Quiz: 15 pts possibl One year Roger had the lowest ERA (earned-run average, mean number of runs yielded per nine innings pitched) of any male pitcher at his school, with an ERA of 3.21. Also, Susan had the lowest ERA of any female pitcher at the school with an ERA of 2.63. For the males, the mean ERA was 4.847 and the standard deviation was 0.502. For the females, the mean ERA was 4.402 and the standard deviation was 0.747. Find their respective z-scores. Which player had the better year relative to their peers, Roger or Susan? (Note: In general, the lower the ERA, the better the pitcher.) Roger had an ERA with a z-score of Susan had an ERA with a z-score of (Round to two decimal places as needed.) Which player had a better year in comparison with their peers? OA. Roger had a better year because of a higher z-score. O B. Susan had a better year because of a lower z-score. O C. Susan had a better year because of a higher z-score. O D. Roger had a better year because of a lower z-score