Propose an efficient synthesis for the following transformation: The transformation above can be performed with some regent or combination of the reagents listed below. Give the necessary reagents 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. MCPBA(RCO3H) B. xsHBr C. 1) LiAlH4;2H3O+ D. Na2Cr2O7,H2SO4,H2O E. KMnO4 F.Br2,hv G. H2O,H2SO4,HgSO4 H. 1) HCCNa; 2) H3O+ I. 1) R2BH; 2) H2O2,NaOH