Calculate the Energy Change for the Reaction K(g) + I(g) $\rarr$

Calculate the energy change for the reaction K(g) + I(g) $\rarr$ K⁺(g) + I ^- (g)
Given the following ionization energy (IE) and electron affinity (EA) values. $\begin{array}{cc}\text { IE } & \text { EA } \\\text { K: } 419 \mathrm{~kJ} / \mathrm{mol} & 48 \mathrm{~kJ} / \mathrm{mol} \\\text { I: } 1,010 \mathrm{~kJ} / \mathrm{mol} & 295 \mathrm{~kJ} / \mathrm{mol}\end{array}$

A) -124 kJ/mol
B) -715 kJ/mol
C) 715 kJ/mol
D) 1429 kJ/mol
E) None of these