TS EAMCET 04 May 2019 Shift 1 Solved Paper

A hydrocarbon with molecular formula C4H6 undergoes the following reactions:
A. Decolourized molecular bromine.
B. Reacted with HBr.
C. Addition of ozone and then cleavage of the ozonide by Zn/H2O gave the product
Then, the structure of the hydrocarbon is