What is the primary distinction between a non-formulary list and a formulary list in healthcare?
a. Non-formulary lists contain medications that are readily available, while formulary lists contain rare medications.
b. Non-formulary lists include generic drugs, while formulary lists include brand-name drugs.
c. Non-formulary lists consist of medications not covered by insurance, while formulary lists consist of covered medications.
d. Non-formulary lists consist of medications that may not be covered by insurance or may require special authorization, while formulary lists contain medications covered by insurance.