The crucial roles assumed by Public Administration in contemporary society includes:
1. Preservation of the polity
2. Institutionalisation of socio-economic change
3. Protection of the weaker section of society
4. Management of large scale commercial services
Select the correct answer:

A. 1, 2 and 4

B. 1, 2 and 3

C. 2, 3 and 4

D. 1, 2, 3 and 4

Answer: Option D