Take context from the input text and decide on the accurate relationship between 'comScore' and 'Rentrak' from the options provided.
Options: distributed by, operator, owner of, chairperson

You are hereby notified that Levi & Korsinsky, LLP has commenced an investigation into the fairness of the sale of Rentrak Corporation ( RENT ) to comScore, Inc. ( SCOR ) for 1.15 shares of comScore, representing an approximate value of $49.63 per share based on the closing price of comScore on the business day prior to the merger announcement.
owner of