For how many years must prescription records be maintained according to regulations?

The correct choice is that prescription records must be maintained for 5 years according to regulations. This requirement is in place to ensure that there is a comprehensive and accessible history of prescriptions for patients. Maintaining records for this duration allows for proper tracking of patient care, facilitates audits, and supports medication safety by ensuring that healthcare professionals can review a patient's medication history when necessary.

Additionally, having a 5-year record retention period aligns with best practices in the pharmacy profession, which prioritize patient safety and regulatory compliance. This timeframe also accommodates potential investigations and reviews that might be needed regarding patient medication usage and pharmacy activities.

Other options do not meet the required standards set forth by regulations for record-keeping in pharmacies, making them less suitable than the correct amount of 5 years.