You are evaluating the effectiveness of improvements your company has made to a new mobile app. The 95% confidence interval for the difference between the proportion of users who prefer the old version and the proportion who prefer the new version is 0.043 0.094. At the 0.05 level of significance, should you reject the null hypothesis that there is no difference between the proportions? A. no, because the value zero is firmly within the confidence interval B. no, because we do not know the P-value C. yes, because the margin of error is very small D. no, because the margin of error is very small