Match the Phases of Drug Testing with the Appropriate Description

Match the phases of drug testing with the appropriate description.
-Phase III

A) This phase lasts about 2 years. The number of volunteers is 100 to 300 persons with the disease to assess the effectiveness of a drug and to observe for adverse side reactions.
B) This phase lasts about 1 year and includes 20 to 80 healthy volunteers who are tested for the safety of new drug.
C) This phase lasts about 3 years. The number of patients with a specific disease is 1000 to 3000 to further verify effectiveness and identify any specific negative side effects of the drug.