Benzene in soft drinks

From Medical News Today:

"According to a sample of 100 drinks, the FDA found that 5 had benzene levels over the 5 parts per billion limit set for drinking water."

and later:

"If a soft drink contains Vitamin C (ascorbic acid) plus either sodium benzoate or potassium benzoate, benzene can form in it when exposed to heat and/or light.

The FDA says it has informed the companies of the five drinks. Some have reformulated the drinks, while others say they will do so. Officials say people should not be concerned about their safety. However, several groups disagree."