The correct option is (3) as A. Cocaine - Obtained from plant Erythroxylum coca, stimulating action on CNS. B. Heroin - Formed by the acetylation of morphine which is obtained from plant Papaver somniferum. C. Morphine - Obtained from Papaver somniferum, is an effective sedative in surgery. D. Marijuana - Obtained from Cannabis sativa, produces hallucinogenic effect and affects cardiovascular svstem of the body
