The correct option is A Morphine, codeine, heroin
Opiates are a group of drugs that are used for treating pain. They are derived from opium which comes from the poppy plant. Opiates go by a variety of names including opiates, opioids and narcotics. The term opiates are sometimes used for close relatives of opium such as codeine, morphine and heroin.
Therefore, the correct answer is option A.