For the Transformation Shown, Select the Most Appropriate Reagent(s) to Effect

For the transformation shown, select the most appropriate reagent(s) to effect the change.

A) 1) OsO₄; 2) NaHSO₃, H₂O
B) 1) Hg(OAc) ₂, H₂O; 2) NaBH₄
C) 1) RCO₃H; 2) H₃O⁺
D) H₂SO₄, H₂O
E) 1) O₃; 2) DMS