Refer to the input text as context and select the correct relationship between 'comScore' and 'Rentrak' from the available options.
Options: developer, owner of, platform, founded by

They may also be obtained for free by contacting comScore Investor Relations by mail at comScore, Inc., 11950 Democracy Drive, Suite 600, Reston, Virginia 20190, Attention: Investor Relations, by telephone at (703) 438-2305, or by going to comScore's Investor Relations page on its corporate web site at www.comscore.com , or by contacting Rentrak Investor Relations by mail at Rentrak Corporation, 7700 N.E.
owner of