Answer:
C. Physician's Desk Reference
Step-by-step explanation:
The "Physician's Desk Reference" refers to a compilation of prescription drugs with the same information you can find in the "package insert" of medications. It is being updated regularly in order to include the new drugs being introduced by drug companies. It can be found in bookstores or libraries. It also has an electronic version. Nowadays, it is better known as "Prescribers Digital Reference." The package insert includes valuable information about the drug and its uses.