a certain reaction is nonspontaneous under standard conditions, but becomes spontaneous at higher temperatures. what conclusions may be drawn under standard conditions? a) ∆h < 0, ∆s > 0 and ∆g > 0 b) ∆h > 0, ∆s < 0 and ∆g > 0 c) ∆h > 0, ∆s > 0 and ∆g > 0 d) ∆h < 0, ∆s < 0 and ∆g > 0 e) ∆h > 0, ∆s > 0 and ∆g