1. Any undertaking which has requested or obtained authorization from more than one Member State may apply for the following advantages which may be granted only jointly:
(a) the solvency margin referred to in Article 25 shall be calculated in relation to the entire business which it carries on within the Community; in such case, account shall be taken only of the operations effected by all the agencies or branches established within the Community for the purposes of this calculation;
(b) the deposit required under Article 23(2)(e) shall be lodged in only one of those Member States;
(c) the assets representing the guarantee fund shall be localized in any one of the Member States in which it carries on its activities.
2. Application to benefit from the advantages provided for in paragraph 1 shall be made to the competent authorities of the Member States concerned. The application must state the authority of the Member State which in future is to supervise the solvency of the entire