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

Molecule             $\to $         Source                  $\to $                Uses

• A

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

• B

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

• C

  $(B)$ Cannabinoid  $\to $  Atropa belladona  $\to $  Produces hallucinations

• D

  $(A)$  Morphine  $\to $   Papaver somniferum $\to $  Sedative and pain killer