Where the supervisory authorities approve a method to determine the amount of each ancillary own fund item, the supervisory authorities' decision shall set out all of the following:
((a))(a) the initial amount of the ancillary own funds item that has been calculated using that method at the date the approval is granted;
((b))(b) the minimum frequency of recalculation of the amount of ancillary own funds item using that method where it is more frequent than annual, and the reasons for that frequency;
((c))(c) the time period for which the calculation of the ancillary own funds item using that method is granted.