Ball's Research on Disinflation Across Different Countries Found That

Ball's research on disinflation across different countries found that

A) costs of disinflation were smaller for rapid disinflation than for gradual disinflation.
B) costs of disinflation were larger for rapid disinflation than for gradual disinflation.
C) costs of disinflation were about the same for both rapid and gradual disinflation.
D) costs of disinflation were smaller when the central bank had a strong inflation-fighting reputation.