(13)Where no option for safe harbour has been exercised under sub-rule (1) by an eligible assessee in respect of an eligible international transaction entered into by the assessee or the option exercised by the assessee is held to be invalid, the arm's length price in relation to such international transaction shall be determined in accordance with the provisions of sections 92C and 92CA without having regard to the profit margin or the rate of interest or commission as specified in sub-rule (2) [or, as the case may be, sub-rule (2A)] [Inserted by the Income-tax (Twelfth Amendment) Rules, 2017, w.r.e.f. 1-4-2017.] of rule 10TD.