Geo-Scientist Prelims 2023 Chemistry Q105: The major product formed in the following reaction is :

The major product formed in the following reaction is :

1. (a) trans-Fused epoxide with O on the β-face (same side as CH₃)
2. (b) trans-Fused epoxide with O on the α-face (opposite to CH₃)
3. (c) cis-Fused decalin epoxide with O on the β-face
4. (d) Epoxide with CH₃ drawn α (inverted angular methyl) and O on the α-face