For the reaction: 2C4H10 (g) + 13O2 (g) → 8CO2 (g) + 10H2O (g) ΔH° is -125 kJ/mol and ΔS° is +253 J/K ∙ mol. This reaction is __________.
spontaneous only at low temperature
spontaneous at all temperatures
nonspontaneous at all temperatures
spontaneous only at high temperature
not enough information to solve this problem