68In so far as AC‑Treuhand claims that the General Court was wrong to take the view that the Commission gave adequate reasons for its decision as regards the criteria adopted in setting the fines imposed, it should be observed that, in the determination of the amount of the fine in a case of infringement of the competition rules, the Commission fulfils its obligation to state reasons when it indicates in its decision the factors which enabled it to determine the gravity of the infringement and its duration, and it is not required to indicate the figures relating to the method of calculating the fines (see, to that effect, inter alia, judgment in Telefónica and Telefónica de España v Commission, C‑295/12 P, EU:C:2014:2062, paragraph 181).
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