For the calculation of the overall effective rate, if the agreement provides for the possibility for the borrower to dispose of the sums available under the credit agreement according to different terms and conditions accompanied by different charges or different borrowing rates, the creditor shall specify the terms and conditions he has taken as a reference in accordance with the assumption set out in 3° of Part II of the Annex to this Code, referred to in Article R. 314-3. It states that the other terms and conditions may result in the application of higher annual percentage rates.