Which of the Following Correctly Represents the Taylor Rule

Multiple Choice

Which of the following correctly represents the Taylor rule?

A) i = Π + i* + a(Π - Π*) / b (GDP - GDP*) , where Π is the inflation rate, Π* is the target inflation rate, GDP* is the potential GDP, and i* is the real interest rate.
B) i = Π + i* + a(Π - Π*) + b (GDP - GDP*) , where Π is the inflation rate, Π* is the target inflation
C) i = Π + i* + a(Π - Π*) - b (GDP - GDP*) , where Π is the inflation rate, Π* is the target inflation rate, GDP* is the potential GDP, and i* is the real interest rate.
D) i = Π + i* + a(Π - Π*) * b (GDP - GDP*) , where Π is the inflation rate, Π* is the target inflation