The standard reaction Gibbs energy for a chemical reaction at an absolute temperature T is given by, ΔrG°= A – BT Where A and B are non-zero constants. Which of the following is true about this reaction of the following is true about this reaction of the following is true about this?

• A. Endothermic if, A < 0 and B > 0
• B. Exothermic if, B < 0
• C. Exothermic if, A > 0 and B < 0
• D. Endothermic if, A > 0