The correct answer is option 'A' i.e. APS.

APS stands for Annapurna Scheme which was started in the year 2000 for the indigent senior citizens who are not covered under the National Old Age Pension Scheme (NOAPS). It is a centrally sponsored scheme implemented through State Governments and Union Territories.

Under this scheme, eligible beneficiaries are provided with free food grains up to 10 kg per person per month. The beneficiaries are identified by the State Governments and Union Territories and the food grains are distributed through the Fair Price Shops (FPS) of the Public Distribution System (PDS).

Some key features of the Annapurna Scheme are:

1. Eligibility: The scheme is meant for the senior citizens who are not covered under the NOAPS and are 65 years of age or above.

2. Coverage: The scheme covers the entire country.

3. Food grains: The eligible beneficiaries are provided with free food grains up to 10 kg per person per month.

4. Identification of beneficiaries: The State Governments and Union Territories are responsible for identifying the eligible beneficiaries.

5. Distribution: The food grains are distributed through the Fair Price Shops (FPS) of the Public Distribution System (PDS).

6. Funding: The scheme is implemented with 100% central assistance.

The Annapurna Scheme is a welfare measure for the indigent senior citizens who are not covered under the NOAPS. It helps in ensuring food security and improving the quality of life of the senior citizens.