Identify the molecules $(A)$ and $(B)$ shown below and select the right option giving their source and use.

• A

  $(A)$ Cocaine $→$ Erythroxylum coca $→$ Accelerates the transport of dopamine

• B

  $(B)$ Heroin $→$ Cannabis sativa $→$ Depressant sativa and slows down body functions

• C

  $(B)$ Cannabinoid $→$  Atropa belladonna $  →$ Produces hallucinations

• D

  $(A)$ Morphine $→$ Papaver somniferum $→$ Sedative and pain killer