This is a question given in our exam. In the reaction,

Find the reagents X and Y required for steps(ii) and (iii) are _______ and ________ respectively. I have tried in this way but I have stuck in second step. The given compound reacts with PhCO3H to form an epoxide. Am i correct? Then please help me continue the reaction. The answer given is CH3MgBr and H3O+.