Ghanshyam a farmer in Udaipur wants to investor his small savings of 1000/- for a period more than 10 years

Ghanshyam a farmer in Udaipur wants to investor his small savings of 1000/- for a period more than 10 years. Suggest him the financial facility provided by post office to park his saving.

He can buy Kisan Vikas Patra, National saving certifate.