General regulations mandated by the Controlled Substances Act require physicians who purchase, prescribe, dispense, administer, or in any way handle controlled drugs to follow certain procedures. Which of the following accurately describes one of these procedures?

A. A physician who registers with the Drug Enforcement Administration may store controlled substances in multiple locations within the division office region.
B. The physician must make a written inventory of drug supplies every five years, and keep such records an additional two years.
C. The physician must keep records concerning the administering or dispensing of a controlled drug on file for two years.
D. The physician must keep drugs in his or her office and keep logs for five years.
E. The physician must keep drugs in an unlocked storage room and report any thefts immediately to the nearest DEA office and the local police.

Answer: C