FILE - In this Feb. 7, 2012 file photo, Diet Pepsi Wild Cherry cans are displayed at a store in Pittsburgh. PepsiCo reports its fourth quarter earnings, Thursday, Feb. 14. 2013. (AP

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FILE - In this Feb. 7, 2012 file photo, Diet Pepsi Wild Cherry cans are displayed at a store in Pittsburgh. PepsiCo reports its fourth quarter earnings, Thursday, Feb. 14. 2013. (AP Photo/Gene J. Puskar, File) less