What is the maximum duration for which a Schedule II prescription can be filled?

The correct answer is C, which indicates that a Schedule II prescription can be filled up to a maximum of 90 days from the issue date. According to federal regulations, Schedule II controlled substances have the most restrictive dispensing requirements due to their high potential for abuse and dependence. When prescriptions are written for these controlled substances, they are valid for a limited duration to help prevent misuse.

While some states may have additional regulations, the general federal guideline allows for a 90-day expiration period from the date the prescription is written. This timeframe serves to monitor and reduce the risks associated with long-term use of highly regulated medications.

The other options reflect shorter durations, which are not correct as they do not align with the federal regulations governing the dispensing of Schedule II prescriptions. Understanding these limitations is crucial for compliance with both state and federal laws regarding controlled substances.