23.2 g of an organic compound having molecular formula \[{{C}_{n}}{{H}_{2n+2}}\] is burnt in excess of \[{{O}_{2}}(g)\]initially taken in a 44.82 L steel vessel. Before reaction the gaseous mixture w at 273 K with pressure of 2 aim. After complete combustion and loss of considerable amount of heat the mixture of product and excess of had a temperature of 546 K and 4.6 atm pressure. The formula of compound is

• A. \[{{C}_{5}}{{H}_{12}}\]
• B. \[{{C}_{6}}{{H}_{10}}\]
• C. \[{{C}_{3}}{{H}_{8}}\]
• D. \[{{C}_{4}}{{H}_{10}}\]