Which of the following statements accurately describe the purpose and functioning of Regional Rural Banks (RRBs) in India, established to strengthen the flow of credit to the rural and agricultural sectors?

1. RRBs were established to provide credit and banking facilities to rural and agricultural sectors.
2. RRBs are jointly owned by the Central Government, State Government, and Sponsor Banks.
3. RRBs primarily focus on serving urban and metropolitan areas.
4. RRBs are regulated by the National Bank for Agriculture and Rural Development (NABARD).
5. RRBs are restricted to providing only short-term loans for agricultural purposes.