This Monday, Oct. 15, 2012 photo shows two cans of Caffeine Free 

This Monday, Oct. 15, 2012 photo shows two cans of Caffeine Free Diet Coke on ice in Surfside, Fla. Coca-Cola is expected to report earnings, Tuesday, Feb. 12, 2013. (AP Photo/Wilfredo Lee)
Associated Press
This Monday, Oct. 15, 2012 photo shows two cans of Caffeine Free Diet Coke on ice in Surfside, Fla. Coca-Cola is expected to report earnings, Tuesday, Feb. 12, 2013. (AP Photo/Wilfredo Lee)
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