The correct option is A All of these
Plant A is Papaver somniferum (family-Papaveraceae). The drug opium is dried latex of unripe capsular fruits of this plant.
Plant B is Erythroxylum coca (coca plant, family-Erythroxylaceae). The drug cocaine is obtained from the leaves of this plant. Cocaine is powerful CNS stimulant, which increases a person’s mental alertness and physical activity.
Plant C is Cannabis sativa (Hemp plant, family-Moraceae). Hallucinogenic chemicals obtained from leaves, resin and inflorescence of hemp plant are called as cannabinoids. There are four such types of hallucinogenic products – bhang, ganja, charas (hashish) and marijuana.
So, all the given statements are correct.