MCQ
Consider following statements Correct statement$(s)$ are


- A$a$ and $b$
- B$a, b$ and $c$
- ✓$a, b$ and $d$
- D$a, b, c$ and $d$

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$\mathop {C{H_3} - \mathop C\limits^ \oplus H - C{H_3}}\limits_I $
$\mathop {C{H_3} - \mathop C\limits^ \oplus H - OC{H_3}}\limits_{II} $
$\mathop {C{H_3} - \mathop C\limits^ \oplus H - C{H_2} - OC{H_3}}\limits_{III} $