The Standard Free Energy of Formation of Gaseous Hydrogen Iodide $\circ$

The standard free energy of formation of gaseous hydrogen iodide is 1.30 kJ/mol at 25 ^$\circ$ C. Find K_p for the reaction H₂(g) + I₂(s) $\leftrightharpoons$ 2HI(g) at this temperature.

A) 7.0
B) 7100
C) 1.0
D) 2.4
E) 2.9