Which one of the following statements is incorrect?

A Grignard reagents react with \( CO_2 \) followed by hydrolysis to produce primary alcohol

B 2, 4 DNP is used to separate aldehyde from ketone

C \( \alpha \) - hydrogen containing aldehyde or ketone gives the Iodoform reaction

D The Cannizzaro Reaction is a redox disproportion of aldehydes to carboxylic acids and alcohols

Correct Answer: Option C