Answer:
B. savings bank
Explanation:
Savings bank is defined as a bank which helps customers or people to invest or deposit in interest giving accounts that will give a long term investment.
Savings bank were started in Europe in the 19th century. Saving banks gives interest on the deposit amount that is why its is a for-profit institution for general public. The interest saving banks give by investing in government and corporate debt.
Hence, the correct answer is "B. savings bank".