0.369g of a bromo derivative of a hydrocarbon (A) when vaporised occupied 67.2mL at NTP. (A), on reaction with aqueous NaOH, gives (B). (B), when passed over alumina at `250^(@)C`, gives a neutral compound (C ) while at `300^(@)C`, it gives a hydrocarbon (D). (D), when heated with HBr gives an isomer of (A). When (D ) is treated with concentrated `H_(2)SO_(4)` and the product is diluted with water and distilled, (E ) is obtained Identify (A) to (E ).

Explanation