Help Im very confused on what the answer is

Propose an efficient synthesis for the given transformation. This transformation 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. C 1) O; 2) MgH2, Lindlar's cat. 1) MeMgBr;2) G. Na,NH3(h) 1) EtMBBr 2) HBr (xs), heat H3O H3O+ K L DMP or PCC SOCl2, pyridine 1) BH3 THF: 2) H2O2. dilute H2SO4 EtBr NaOH 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. 1) C. 1) 2) H3O+workup 2) H3O+workup D. Mg E. 1) BH3THF;2)H2O2,NaOH F.DMP or PCC G. SOCl2, py H. 1) PhMgBr;2)H3O+ I. Na2Cr2O7,H2SO4H2O