Real-Life Confidence Interval

A pharmaceutical company is testing a new drug's effectiveness. The confidence interval for the percentage of patients who recover is $[75\%,85\%][75\backslash \%,\; 85\backslash \%]$[75%,85%]. What does this mean?

1. A) Between 75% and 85% of all patients will recover for sure.
2. B) The true recovery rate is guaranteed to be between 75% and 85%.
3. C) There is a 95% chance that the true recovery rate lies between 75% and 85%.
4. D) The recovery rate in the sample is exactly 80%.