Help Please!

Propose an efficient synthesis for the following transformation: 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 D t-BuOK NaOH 1) BH3,THF:2 ) H2O2,NaOH NaOMe: H2, Lindlar's cat. 1) LiAlH4;2)H3O4 G H TsCl, py Br 2,hv 1H2SO4,H2O2HgSO4JPBr3KdiluteH2SO4