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

• A
  $(A)$ Cocaine $\rightarrow$ Erythroxylum coca $\rightarrow$ Accelerates the transport of dopamine
• B
  $(B)$ Heroin $\rightarrow$ Cannabis sativa $\rightarrow$ Depressant and slows down body functions
• C
  $(B)$ Cannabinoid $\rightarrow$ Atropa belladonna $\rightarrow$ Produces hallucinations
• D
  $(A)$ Morphine $\rightarrow$ Papaver somniferum $\rightarrow$ Sedative and pain killer