(b) makes other rational classifications among subscribers, such as business and residential, and to provide service on the basis of the classification. 12. Guidance. (1) Where a licensee intends to enter into an agreement or take any action that may affect another licensee in the same market segment, it may seek guidance from the Commission at least thirty days prior to the entering into the agreement or taking of such action. (2) The Commission’s shall respond within thirty days of receiving the request under paragraph (1) stating whether the agreement or conduct is likely to contravene these Regulations; (3) Notwithstanding the provision of these Regulations, a licensee shall ensure that all its agreements and conduct are lawful. 13. Investigations into complaints of unfair competition and discrimination. (1) The Commission may, on its own motion or upon a complaint, investigate a licensee whom it has reason to believe has committed an act or omission, or is alleged to have committed an act or omission, or to have engaged in a practice, breaching the requirement for fair competition or equality of treatment. (2) When conducting an investigation under section 84S and 84T of the Act, the Commission may— (a) require the production of any document or information that is specified or that falls within a specified category, which it considers relates to any matter relevant to the investigation, at a time and place, and in the manner or form specified; (b) take copies of, or extracts from any document produced; (c) require an explanation of any such document; and (d) where a document is not produced, require a statement specifying where it can be found; (e) enter any premises with a warrant and require the production of any document appearing to be the kind in respect of which the warrant was granted or relevant to the investigation and require any relevant information held in computer to be produced in a form in which it can be read and taken away;