A Sample of 41 Light Bulbs Had a Mean Lifetime $95 \%$

A sample of 41 light bulbs had a mean lifetime of 599 hours. A $95 \%$ confidence interval for the population mean was $593.8 < \mu < 604.2$ .
Which one of the following statements is the correct interpretation of the results?

A) None of these are true.
B) The probability that the population mean is between 593.8 hours and 604.2 hours is 0.95.
C) 95% of the light bulbs in the sample had lifetimes between 593.8 hours and 604.2 hours
D) We are 95% confident that the mean lifetime of all the bulbs in the population is between 593.8 hours and 604.2 hours.