2. Member States may require the persons concerned to provide evidence that they have:
(a) stable and regular resources which are sufficient to maintain themselves and the members of their families, without recourse to the social assistance of the Member State concerned. For each of the categories referred to in Article 14(2), Member States shall evaluate these resources by reference to their nature and regularity and may take into account the level of minimum wages and pensions;
(b) sickness insurance covering all risks in the second Member State normally covered for its own nationals in the Member State concerned.