Chapter 18, Problem 27QP

From the following combinations of $\Delta H\text{ and }\Delta S$, predict if a process will be spontaneous at a high or low temperature: (a) both $\Delta H\text{ and }\Delta S$ are negative. (b) $\Delta H$ is negative and $\Delta S$ is positive, (c) both $\Delta H\text{ and }\Delta S$ are positive, (d) $\Delta H$ is positive and $\Delta S$ is negative.