For a specific sample consisting of n observations, the width of a 90% confidence interval on?
a. would be larger than the width of a 95% confidence interval on ?.
b. would be smaller than the width of a 95% confidence interval on ?.
c. would be the same as the width of a 95% confidence interval on ?.
d. cannot be compared to the width of a 95% confidence interval on ?.
e. none of the above