For a group of given data, the relationship between 95% CI and 99% CI is that

A、99%CIisnarrowerthan95%CI.;
B、95%CIisnarrowerthan99%CI.;
C、95%CIisequalto99%CI.;
D、95%CIisalways1.96timesnarrowerthan99%CI.;
E、99%CIisalways1.96timesnarrowerthan95%CI.