1 . MEASURES ADOPTED BY THE INSTITUTIONS - STATEMENT OF REASONS - OBLIGATION - SCOPE - DECISION ORDERING AN INVESTIGATION UNDER ARTICLE 14 ( 3 ) OF REGULATION NO 17 ( REGULATION NO 17 OF THE COUNCIL , ART . 14 ( 3 )) 2 . COMPETITION - ADMINISTRATIVE PROCEDURE - COMMISSION ' S POWERS OF INVESTIGATION - INVESTIGATION ORDERED BY A DECISION - OBLIGATION TO CONSULT THE COMPETENT NATIONAL AUTHORITIES - INFORMAL CONSULTATION - WHETHER PERMISSIBLE ( REGULATION NO 17 OF THE COUNCIL , ART . 14 ( 3 ) AND ( 4 )) 3 . COMMISSION - PRINCIPLE OF COLLEGIATE RESPONSIBILITY - IMPLICATIONS - USE OF A SYSTEM OF DELEGATIONS OF AUTHORITY FOR THE ADOPTION OF MEASURES OF MANAGEMENT OR ADMINISTRATION - LAWFULNESS - CONDITIONS ( MERGER TREATY , ARTS 16 AND 17 ) 4 . COMPETITION - ADMINISTRATIVE PROCEDURE - COMMISSION ' S POWERS OF INVESTIGATION - DECISION ORDERING AN INVESTIGATION - STRAIGHTFORWARD MANAGEMENT DECISION - ADOPTION UNDER A DELEGATION OF AUTHORITY - LAWFULNESS ( REGULATION NO 17 OF THE COUNCIL , ART . 14 ( 3 ))