Propose an efficient synthesis for the following compound using the malonicester synthesis: OH EIO OET The transformation above can be performed with some reagent 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. NaOEt B. c C. Br Br D. Mel E.H,O, heat F. Br