What is the Kefauver-Harris Amendment?

What is the Kefauver-Harris Amendment?
 
  a) An amendment to the Federal Food, Drug, and Cosmetic Act that requires drug companies to prove that new drugs are effective as well as saf
  b) An amendment to the Federal Food, Drug, and Cosmetic Act that requires drug companies to provide generic alternatives to brand-name drugs
  c) An amendment to the Pure Food and Drug Act that requires all ingredients in drugs be accurately identified on the label
  d) An amendment to the Pure Food and Drug Act that requires drug companies to provide generic alternatives to brand-name drugs