Any natural or legal person entering into a sovereign credit default swap position shall, on the request of the competent authority:
((a))
justify to that competent authority which of the cases set out in Article 15 were fulfilled at the time the position was entered into;
((b))
demonstrate to that competent authority compliance with the correlation test in Article 18 and the proportionality requirements in Article 19 in respect of that sovereign credit default swap position at any time that they hold that sovereign credit default swap.