LIST I | LIST II | ||
| A | Pneumonia | I | Wuchereria bancrofti |
| B | Typhoid | II | Streptococcus pneumoniae |
| C | Filariasis | III | Entamoeba histolytica |
| D | Amoebiasis | IV | Salmonella typhi |

Study the chemical structure of an addictive drug shown below and answer the questions that follow.