The compound \[{{\text{C}}_{\text{7}}}{{\text{H}}_{\text{8}}}\] undergoes the following reactions\[:{{\text{C}}_{\text{7}}}{{\text{H}}_{\text{8}}}\xrightarrow{3C{{l}_{2}}/\Delta }A\xrightarrow{B{{r}_{2}}/Fe}B\xrightarrow{Zn/HCl}C\]. The product 'C' is [NEET - 2018]