Which among the following compounds is treated with benzonitrile of obtain benzophenon in dry ether and then…

Which among the following compounds is treated with benzonitrile of obtain benzophenon in dry ether and then acid hydrolysis?
  1. $\mathrm{CH}_{3} \mathrm{COCH}_{3}$
  2. $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{MgBr}$
  3. $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{ONa}$
  4. $\mathrm{CH}_{3} \mathrm{MgBr}$

Asked in: MHT CET 2020 (13 Oct Shift 2)

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