1. If a CCP is unable to deposit the financial instruments referred to in Article 45 or those posted to it as margins, default fund contributions or contributions to other financial resources, both by way of title transfer and security interest, with the operator of a securities settlement system that ensures the full protection of those instruments then such financial instruments shall be deposited with any of the following:

(a) a central bank that ensures the full protection of those instruments and that enables the CCP prompt access to the financial instruments when required;

(b) an authorised credit institution as defined under Directive 2006/48/EC of the European Parliament and of the Council [OJ L 177, 30.6.2006, p. 1.] that ensures the full segregation and protection of those instruments, enables the CCP prompt access to the financial instruments when required and that the CCP can demonstrate has low credit risk based upon an internal assessment by the CCP. In performing such an assessment, the CCP shall employ a defined and objective methodology that shall not fully rely on external opinions and that takes into consideration the risk arising from the establishment of the issuer in a particular country;