Ms. Parker determined that the mean test score in her first-period class was 81 with a standard deviation of 7.06. The mean test score in her second-period class was 88 with a standard deviation of 8.24. Which conclusion can be made about her students' test scores?
A. Period 1 had scores that were less spread out around the median than Period 2.
B. Period 2 had scores that were less spread out around the mean than Period 1.
C. Period 1 had scores that were less spread out around the mean than Period 2.
D. Period 2 had scores that were less spread out around the median than Period 1.