Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Which of the following equations is a consequence of the Fisher effect?
Option A:Nominal interest rate = Real interest rate + Expected rate of inflation.
Option B:Real interest rate = Nominal interest rate + Expected rate of inflation.
Option C:Nominal interest rate = Real interest rate + Market risk premium.

Answer: A