9) 11 runners are timed at the 100-meter dash and are timed again one month later after following a new training program. The times (in seconds) are shown in the table. Use Wilcoxon's signed-ranks test and a significance level of 0.05 to test the claim that the training has no effect on the times.
Before 12.1 12.4 11.7 11.5  11.0 11.8 12.3 10.8 12.6 12.7 10.7
After    11.9 12.4 11.8  11.4 11.2 11.5 12.0 10.9 12.0 12.2 11.1
Given that the test stat is 16.5, find your critical value and state your conclusion:

A) CV = 8, We cannot reject the claim that the before and after times have the same median.
B) CV = 10, We cannot reject the claim that the before and after times have the same median.
C) CV = 8, The data allows us to reject the claim that the before and after times have the same median.
D) CV = 13, We cannot reject the claim that the before and after times have the same median.