Question
Identify A, B and C.


| A | $C_6 H_5 CH_2 CN$ | Benzyl cyanide |
| B | $C_6 H_5 CH_2 MgBr$ | Benzyl magnesium bromide |
| C | $C_6 H_5 CH_2 COOH$ | 2-Phenyl ethanoic acid |
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