communication is paid for by such other persons and authorized by such authorized political committee; (3) if not authorized by a candidate, an authorized political committee of a candidate, or its agents, shall clearly state the name and permanent street address, telephone number, or World Wide Web address of the person who paid for the communication and state that the communication is not authorized by any candidate or candidate's committee. (b) No person who sells space in a newspaper or magazine to a candidate or to the agent of a candidate, for use in connection with such candidate’s campaign, may charge any amount for such space which exceeds the amount charged for comparable use of such space for other purposes. (c) Specification Any printed communication described in subsection (a) of this section shall– (1) be of sufficient type size to be clearly readable by the recipient of the communication; (2) be contained in a printed box set apart from the other contents of the communication; and (3) be printed with a reasonable degree of color contrast between the background and the printed statement. (d) Additional requirements (1) Communications by candidates or authorized persons (A) By radio Any communication described in paragraph (1) or (2) of subsection (a) of this section which is transmitted through radio shall include, in addition to the requirements of that paragraph, an audio statement by the candidate that identifies the candidate and states that the candidate has approved the communication. (B) By television Any communication described in paragraph (1) or (2) of subsection (a) of this section which is transmitted 265