Predict the major products (including stereochemistry if applicable) formed from the following reactions.
(i) (2S,3R)-2,3-diethyl-2-methyloxirane + CH₃CH₂O^–/CH₃CH₂OH
(ii) (2S,3R)-2,3-diethyl-2-methyloxirane + H⁺/CH₃CH₂OH

• A.
• B.
• C.
• D.

Answer: (A)