Difficult
Benzonitrile $(C_6H_5CN)$ reacts with a Grignard reagent in dry ether followed by hydrolysis to form benzophenone $(C_6H_5COC_6H_5)$ along with ammonia $(NH_3)$ and hydroxymagnesium bromide $(Mg(OH)Br)$. Identify the reagent used in the above transformation.
- A$C_6H_5MgCl$
- B$C_2H_5MgBr$
- C$C_6H_5MgI$
- D$C_6H_5MgBr$
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