The in \[{{\Delta }_{f}}H{}^\circ ({{N}_{2}}{{O}_{5}},g)\] kJ/mol on the basis of the following data is -\[2NO(g)+{{O}_{2}}(g)\to 2N{{O}_{2}}(g);\]\[{{\Delta }_{r}}H{}^\circ =-114\,kJ/mol\]\[4N{{O}_{2}}(g)+{{O}_{2}}(g)\to 2{{N}_{2}}{{O}_{5}}(g);\]\[{{\Delta }_{r}}H{}^\circ =-102.6\,kJ/mol\]\[{{\Delta }_{f}}H{}^\circ (NO,g)=90.2kJ/mol\]

• A. 15.1
• B. 30.2
• C. -36.2
• D. None of these