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The reaction of methane with water to form carbon dioxide and hydrogen is nonspontaneous at 298 K. At what temperature will this system make the transition from nonspontaneous to spontaneous? The following data are valid at 298 K: CH4(g) + 2 H2O(g) ↔ CO2 (g) + 4 H2 (g) Substance: CH4(g) H2O(g CO2(g) H2(g) ΔH°f (kJ/mol) -74.87 -241.8 -393.5 0 ΔG°f (kJ/mol) -50.81 -228.6 -394.4 0 S° (J/K-mol) 186.1 188.8 213.7 130.7 A) 658 K B)683 K C) 955 K D) 1047 K E) 1229 K