Am I right (CNBC quiz on coca cola)?

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http://www.cnbc.com/id/33622074/?question=1

Question 3:

Dasani brand bottled water, a Coca-Cola product, does not hydrate properly due to its sodium content.

I said this is true, but not because its sodium is high but rather it's too low; ideal hydration should receive sodium in many cases. It said I was wrong:

According to Food and Drug Administration guidelines, if a serving of a food contains less than 5 milligrams of sodium, the quantity is considered nutritionally insignificant, and is listed in the Nutrition Facts panel as 0 milligrams. Dasani brand bottled water contains 0.5 milligrams of sodium per 8-ounce serving, well within the FDA’s guidelines.

 

[spamsk8r]

I would say it's false simply due to it being water, and water hydrates (unless you're drinking sea water or something).