In India, which of the following can be considered as public investment in agriculture?

1. In India, which of the following can be considered as public investment in agriculture? 1. Fixing Minimum Support Price for agricultural produce of all crops 2. Computerization of Primary Agricultural Credit Societies 3. Social Capital development 4. Free electricity supply to farmers 5. Waiver of agricultural loans by the banking system 6. Setting up of cold storage facilities by the governments (UPSC CSP 2020)