The Reagent PCC in Dry Methylene Chloride Is Successful in the Selective

The reagent PCC in dry methylene chloride is successful in the selective oxidation of primary alcohols to aldehydes because:

A) PCC is a relatively weak oxidizing agent.
B) primary alcohols cannot oxidize any further.
C) hydration of the intermediate aldehyde is unable to take place in dry methylene chloride.
D) methylene chloride is a reducing agent.
E) None of these choices.