A Company Checking the Productivity of Its Assembly Line Monitored

A company checking the productivity of its assembly line monitored a random sample of workers
For several days. They found that a 95% confidence interval for the mean number of items
Produced daily by each worker was (23,27) . Which is true?

A) 95% of the workers sampled produced between 23 and 37 items a day.
B) 95% of samples would show mean production between 23 and 27 items a day.
C) Workers produce an average of 23 to 27 items on 95% of the days.
D) We're 95% sure that the mean daily worker output is between 23 and 27 items.
E) 95% of all the workers average between 23 and 27 items a day.