Why Has the Short-Term Nominal Interest Rate Been Discredited as an Indicator

Why has the short-term nominal interest rate been discredited as an indicator of monetary policy?

A) due to the lack of a correlation with decreasing money supply to fight the possibility of disinflation
B) due to the lack of correlation with volatility of central bank policies
C) because it has been abandoned by the Riksbank (the central bank of Sweden)
D) because it moves in tandem with the volatility of central bank policies
E) due to the lack of publicly available data on short-term nominal interest rates