This means that different drugs would have different dosing regimens, subject to change. Based on this sentence, the reader can conclude that -
A. Doctors prefer to treat all infections in the same way to be safe
O B. Doctors need to find new ways to communicate with patients about drug use and infections to ensure that patients follow prescribed treatment plans
O C. Certain infections may require different courses of antibiotic treatment that may be altered over time.
O D. Very common infections have triggered resistance bacteria that cannot be treated effectively with any antibiotic regimen.