f) relevant information regarding the number and choice of the arbitrators within the meaning of Articles 10 and 11.

7.2 The request shall be delivered in as many copies as there are other parties, together with an additional copy for each arbitrator and for the CCIG. The CCIG shall send the request to the respondent.

8. Answer

8.1 The respondent shall communicate its answer to the CCIG within thirty days from the receipt of the request. The answer shall contain:

a) a statement of the defenses, together with supporting documents, including any objection concerning the arbitration agreement;

b) any counterclaim, together with the information provided in Article 7.1 d) - e);

c) relevant information regarding the number and choice of the arbitrators within the meaning of Articles 10 and 11.
8.2 The answer shall be delivered in as many copies as there are other parties, together with an additional copy for each arbitrator and for the CCIG. The CCIG shall send the answer to the claimant.

8.3 The provisions of this Article are subject to Article 18 with respect to the participation of a third party.