Which of the following services are provided under Tamil Nadu’s "Health on Wheels" programme?
- Free diagnostic services in rural areas.
- Laboratory tests at government health centers.
- Providing mobile healthcare units for 385 blocks.
- Conducting telemedicine consultations.
1
Only 1 and 2
2
Only 1, 2, and 3
3
Only 2, 3, and 4
4
All of the above