The Credibility Theory of EMS Had as an Effect

The credibility theory of EMS had as an effect

A) the inflation rates of member countries converging to the low German levels,a result that was not matched by similar countries who did not fix their exchange rates.
B) the inflation rates of member countries failing to converge to the low German levels.
C) the inflation rates of member countries converging to the low German levels,but other countries including U.S.and Britain also reduced inflation in this time period without fixing exchange rates.
D) the inflation rate in Germany rose to match the inflation rates of other member countries.