The compound $"\mathrm{X}"$ reacts with diborane followed by alkaline hydrogen peroxide to form compound $"\mathrm{Y}"$.$"\mathrm{Y}"$ on reaction with a mixture of sodium bromide in sulphuric acid followed by bromobenzene and sodium in ether gives $\mathrm{n}-$pentylbenzene, Compound $"\mathrm{X}"$ is:

Terpinen$-4-\mathrm{ol}$ is an active ingredient in tea tree oil has the following structure

The correct observations for terpinen$-4-\mathrm{ol}$ is/are
$\mathrm{I}$. It rotates the plane of plane polarized light.
$\mathrm{II}$. It reacts with Baeyer's reagent to form form a triol
$\mathrm{III}$. On reaction with $\mathrm{NaBr}$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$, it gives form a diobromo compound
$\mathrm{IV}$. On ozonolysis it gives a compound with molecular formula ${\mathrm{C}}_{10}{\mathrm{H}}_{18}{\mathrm{O}}_3$ ?

On reductive ozonolysis yields.