Which One of the Following Statements Concerning Type I Water

Multiple Choice

Which one of the following statements concerning type I water is not correct?

A) Type I water is acceptable for analytical purposes.
B) Testing that requires minimal interferences (such as iron or enzyme analysis) requires the use of type I water.
C) Type I water is obtained from distillation only and contains a few impurities.
D) Type I water results in part from ion exchange purification and reverse osmosis.