MCQ
Select the best method for the preparation of the following compounds


- Areaction of cyclohexanone with $CH_3Li$
- Breaction of $1-$ methylcyclohexene with $Hg(OAc)_2$ followed by $NaBH_4$
- Creaction of cyclohexene with $BH_3 ; NaOH/H_2O_2,$ following by $CH_3Br$
- ✓reaction of cyclohexene with $MCPBA$, followed by $CH_3MgBr$

