When Considering the Results from an Opinion Poll, Where Several

Multiple Choice

When considering the results from an opinion poll, where several verbal expressions are rated for their level of annoyance, what is particularly useful about margins of error is that:

A) they tell us how accurate our data are.
B) they directly pinpoint a single value to estimate data.
C) the accuracy of the point estimate increases with the addition of the margin of error.
D) we can figure out more than one interval estimate for the same poll to see if they overlap.