In the given reaction sequence, the major product '$\mathrm{C}$' is :

${\mathrm{C}}_8{\mathrm{H}}_{10}\underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\stackrel{{\mathrm{HNO}}_3}{⟶}}\mathrm{A}\underset{\mathrm{\Delta }}{\stackrel{{\mathrm{Br}}_2}{⟶}}\mathrm{B}\underset{\mathrm{KOH}}{\stackrel{\mathrm{alcoholic}}{⟶}}\mathrm{C}$