MCQ
$(A)\xrightarrow[dil.{{H}_{2}}S{{O}_{4}}]{HgS{{O}_{4}}}(B)\xrightarrow{LiAl{{H}_{4}}}\underset{recemic\,mixture}{\mathop{(C)}}\,$
$\therefore$ reactant $(A)$ is
- A$CH_3 -C \equiv CH$
- B$HC \equiv CH$
- ✓$CH_3 -C \equiv C - CH_3$
- D$Ph-CH = CH_2$

