For the Formation of 1 Mol of Nitrosyl Chloride at a Given

Multiple Choice

For the formation of 1 mol of nitrosyl chloride at a given temperature, $\Delta$ _rH = -36 kJ/mol.
NO(g) + ½ Cl₂(g) $\to$ NOCl(g)
The activation energy for this reaction is 67 kJ/mol.What is the activation energy for the reverse reaction?

A) 67 kJ/mol
B) 31 kJ/mol
C) 103 kJ/mol
D) -36 kJ/mol
E) -103 kJ/mol