For the purpose of calculating K-NPR, the own funds requirement for the trading book positions of an investment firm dealing on own account, whether for itself or on behalf of a client, shall be calculated using one of the following approaches:
(a) the standardised approach set out in Chapters 2, 3 and 4 of Title IV of Part Three of Regulation (EU) No 575/2013;
(b) the alternative standardised approach set out in Chapter 1a of Title IV of Part Three of the Regulation No (EU) No 575/2013;
(c) the alternative internal model approach set out in Chapter 1b of Title IV of Part Three of the Regulation No (EU) No 575/2013.