Adele Stanley, a Member of the Greenhouse Health Plan, Recently

Adele Stanley, a member of the Greenhouse Health Plan, recently went to a network pharmacy to have a prescription filled. The pharmacist informed Ms. Stanley that the prescribed drug was not in the plan formulary and that reimbursement for the drug was not available except in extraordinary circumstances. The pharmacist asked Ms. Stanley if she would accept a generic substitute. If Ms. Stanley agrees to the generic substitution, she will receive a drug that

A) has not been tested for safety and efficacy in large clinical trials
B) is available without a prescription at a reasonable cost
C) has been classified by the Food and Drug Administration (FDA) as safe, but that has not been proven fully effective
D) contains active ingredients that are identical to those of the prescribed brand-name drug