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