The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A B C HBr,ROOR 1) O3;2)DMS Br2,hv D E F H2SO4,H2O,HgSO4H2, Lindlar's cat. HCCNa G H I HBr NaOMe 1) R2BH; 2) H2O2,NaOH