Take context from the input text and decide on the accurate relationship between 'comScore' and 'Rentrak' from the options provided.
Options: owner of, subsidiary, chief executive officer, stock exchange

Information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of comScore or Rentrak security holders in connection with the proposed merger will be set forth in the registration statement and the joint proxy statement/prospectus when filed with the SEC.
owner of