Which Statement Concerning Solution Concentration Is TRUE

Which statement concerning solution concentration is TRUE?

A)A 1.0 ppm solution is more concentrated than a 1.0% (m/m)solution.
B)The ppm unit of concentration is typically used for very high concentrated solutions.
C)If a solution is 12% (m/m)it will also be 12% (m/V).
D)If a bottle is labeled 0.10 M Ba(OH)₂,the concentration of OH^- ions in solution is 0.20 M.
E)A solution that is 1 ppt is less concentrated than a solution that is 1 ppm.

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