Earlier this year, the South African Reserve Bank raised its interest rate to a 14-year high, a move Governor Lesetja Kganyago described as "bitter medicine" needed to tame inflation. What is the primary function of the South African Reserve Bank (SARB) being demonstrated in this case? A. Regulation of the stock market B. Conducting of monetary policy and ensuring price stability C. Management of the country's foreign affairs D. Overseeing of the national healthcare system