In a country's presidential election, the incumbent president seeking re-election emphasized in his campaign speech: "During the administration of this government, the unemployment rate has decreased by two percentage points. If one of the following is true, can it effectively weaken the above defense? ? ['The government used the method of lowering interest rates to stimulate the development of industry and commerce, which increased the inflation rate by 40%.', 'Reduced crime rate due to reduced unemployment pressure.', 'Increased employment, reducing government welfare spending.', 'Unemployment rate declines, and employment of new graduates is easier.']