单选题 The real risk - free rate can be thought of as : A. approximately the nominal risk -free rate plus the expected inflation rate. B. approximately the nominal risk -free rate reduced by the expected inflation rate. C. exactly the nominal risk -free rate reduced by the expected inflation rate.

【正确答案】 B

【答案解析】The approximate relationship between nominal rates, real rates and expected inflation rates can be written as: nominal risk - free rate = real risk - free rate + expected inflation rate. Therefore we can rewrite this equation in terms of the real risk - free rate as: Real risk -free rate = Nominal risk -free rate -expected inflation rate The exact relation is: ( 1 + real) ( 1 + expected inflation) = ( 1 + nominal)