An Advisory Committee on Restrictive Practices and Monopolies shall be consulted prior to the taking of any decision following upon a procedure under paragraph 1, and of any decision concerning the renewal, amendment or revocation of a decision pursuant to Article 85 (3) of the Treaty. The Advisory Committee shall be composed of officials competent in the matter of restrictive practices and monopolies. Each Member State shall appoint an official to represent it who, if prevented from attending, may be replaced by another official.