Which of the following is correct regarding HIV, hepatitis B, gonorrhoea, trichomoniasis?
| 1. | Trichomoniasis is a STD whereas others or not. |
| 2. | Gonorrhoea is a viral disease whereas others are bacterial |
| 3. | HIV is a pathogen whereas others are diseases. |
| 4. | Hepatitis B is eradicated completely whereas others are not. |