Researchers Including a Real Exchange Rate Term in the Taylor

Multiple Choice

Researchers including a real exchange rate term in the Taylor rule such that ^{r = p + dp - p*) + BY^ + R* - aEP/P}W^{) have found that, for the Germany} and Japan, a is

A) positive.
B) negative.
C) equal to zero.
D) impossible to calculate.
E) undefined.