PRACTICE the skill Propose an efficient synthesis for the following transformation: Br Br 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. MeONa B. 1) xs NaNH2; 2 H2O Ct-BuOK. D. TSCI, py E. dilute H2SO4 F. Br2 1. HBr G. HBr, ROOR H. 1) BH3-THF; 2) H2O2, NaOH